However, working with Grant can sometimes be a test of patience for the Napier Girls' High School year 10 student.
"It's a bit hard because we argue a lot," says Eva, as a laughing Grant nods in approval.
"But we always find out ways to make things work, though.
"We'll argue once and then get over it. We find a happy medium but sometimes we get a little stroppy," explains the teenager.
In hindsight, Grant wishes she had taken on board more of 69-year-old Margaret's advice.
"We also had that clashing but we did pretty well under the circumstances," she says, appreciating similar differences have been pivotal in bringing her and Eva closer.
"You kind of understand the differences and I can relate to her.
"What hurts most is that I know what my mum was saying to me was right and it isn't until now that I got it," says Grant, who turned 45 on Thursday.
The manager of Napier footwear company Overland suspects the penny will drop more quickly for Eva, who boasts "natural talent" as opposed to her own perseverance.
Sharon McRae, 56 (masters), and Rox Price (masters), round up the four Hastings Skating Club members competing in Whanganui.
Eva, who is at her second Oceanias, started skating when she was 4.
"It was different because there weren't too many around in the country when I was 4.
"I could show off my personality - the way I want to do it, not the way others make me do it," she says.
The dancing routines come into play, reflecting the teenager's exuberant personality.
Skating is tantamount to walking for them.
That is not to say she didn't stumble as she mustered courage on the living room carpet, grass and wooden floors before graduating to concrete surfaces once her confidence levels had peaked.
"I fell many times," she says with a grin, revealing she even took a year off to ponder the benefits of roller skating.
Cold turkey kicked in as it dawned on Eva how much she missed skating.
Make up, leotards and costumes lend to the fun.
The skaters give dressmaker Caroline Longville, of Auckland, their choice of music and she tailors that into an ensemble that holds an element of surprise, even for the athletes.
As a teenager, Eva relishes having a say in the choice of music for her routines, although some of it is set in a particular genre so it's simply a case of adhering to it.
"Once you move up the grades, you get to choose your own music," says Eva, who has contemporary tastes, but isn't shy to embrace classical, among others.
She won national titles for dance and free dance this year although, two years ago, she claimed the Junior Oscar, an award for best performance as assessed by the panel of judges.
Making the top seven at the Oceania Championship and trying to make the cut for the world championship are her goals, although she won't lose sleep if she doesn't accomplish the latter.
Grant, who has lost count of how many Oceania Champs she has attended, got a taste for skates when she was 7.
The seven-time national champion - including three advanced masters and two masters - took a year's hiatus from the code following back surgery.
Mother Margaret couldn't skate, although she had a passion for it and flirted with it in the backyard.
She took elder daughter Fiona down one day when the 7-year-old netballer, Linsay, asked to have a go and found instant traction.
"I just strapped the skates over my sneakers in netball and I just took off," says Grant, her eyes failing to camouflage a four-decade-old sparkle.
"It was just like flying to me, something I had never experienced.
"You know, everyone can run, catch a ball and kick a ball but to skate is actually a skill. It is classed as one of the hardest roller sports," says Grant, whose American jazz, contemporary and ballet dancing lessons became the ideal catalysts.
At 13, dancing and skating were beginning to keep her out most nights so Margaret insisted she make a choice.
"I chose the artistic side of roller skating. I loved my dancing but it [skating] was something I thought I could have travelled more with and it's unique," says Grant.
She says her mother was "amazing" for taking up the reins of mentoring when there was a dearth of coaches in the Bay.
"Mum stepped in to play a big part in my music and making of leotards," says Grant, who has competed four times at the world champs, finishing once in the top 10.
At William Colenso College, she received the ideal reinforcement when it named her sportsperson of the year in her seventh form.
"They really embraced the difference and the uniqueness, I think.
"I feel it's important to see kids doing something different in sports and not just the main [codes] but what they like to do."
She took up judging but that didn't last because, as an active athlete, she found coaching was a bridge closer.
"I just think I had more to give the sport on the other side because I was still skating, so it made it easier to coach and I enjoyed the interaction with athletes, watching their progress."
She believes children tend to learn differently. Eva, for argument's sake, is by "show and tell".
"I can show it to her as opposed to point things out to her."
Grant realises letting others coach Eva is imperative, thus the value of having the input of a vastly experienced Bill Hancock, of Napier. "He's probably our mediator as well, at times, in talking us both through."
However, once they fasten the seatbelts in the car after a competition event, the policy of "no one talks shop" kicks in, unless there's some positive reinforcement.
Grant enjoys the luxury of lapping up everything in the middle of a hall whereas many mothers tend to become observers on the sidelines.
"I'm actually in there with the kids and I watch the giggling, the laughter, the silliness at the motel, the stories and the fun, and eating together."
While she and Eva immerse themselves in skating, Grant is always conscious of according her daughter time and space.
"I probably see less of her than I would like to," she says with a laugh.
Grant embraces the freedom that comes with it as a working solo mum.
"It's just a good time to have to express your own individuality."
Winning has never been an overriding issue for Grant.
"If you're doing something to win, then I don't think you're doing it for the right reasons.
"You should do something because you're enjoying it so winning just becomes a bonus," she says, not putting her proteges under any such pressures.
"If they win, that's great. If they don't, as long as they manage to have lots of laughs."
