"I was pretty good at it and raced until I was 20 doing a few of the Island championships and things like that. Then we got a house and I thought that was more fun than racing, and then a number of years later we had Damon.
"Damon was keen on driving, building and creating stuff with his dad and was karting when he was 6 and so the cycle started again with the kids."
As with all mums, dads, team owners, managers, engineers, mechanics and race organisers, safety is paramount.
"From a safety point of view I'm just happy the boys have the best safety gear they can get and they're in good, safe cars. So I don't worry about the safety point of view, as if everything does what it's supposed to do they'll be okay," says Marguerite.
"It's amazing these days what they've got with the HANS [head and neck support] device available and all the other new materials. Technology has moved so far so fast now. Any sport has its dangers but it's a lot safer than horse riding, rugby or even fishing."
Other than hoping nothing untoward happens to her boys, Marguerite's only other concern is that they have a good time and do the best they can and stay out of trouble on the racetrack.
"All I really think about is they do the best they can and everyone else doesn't do nasty things to them or push them off the track. I do get upset as a mum though when someone on the racetrack does something silly and causes an incident and isn't fair.
"You get that sort of unfair, silly stuff in tough competition but I don't like it and get upset when I see it. It's like I want them to leave my boys alone. At the end of the day, if they've done the best they can and enjoyed it and it's been a good, clean race, I'm happy they've had a good day," says Marguerite.
Motor racing is a tough sport and while drivers understand it's a roller coaster ride in motorsport, for a parent it can be frustrating.
"It was really sad Damon had a part failure [rear wing] on Saturday when he was sitting in second motoring away quite happily. I felt really sorry for him. That's sport and he took it on the chin and said tomorrow is another day.
"That's the great thing about any sport - kids learn that when things go bad you have to pick yourself up and move on to the next thing. It's good character building stuff. I was pretty upset but you have to move on, as you can't really do anything about it but it kept going around and around in my head thinking if only ... but then I go and try and do something else to take my mind of it."
Racing is expensive, and while Damon will do the entire series, it's not looking like his brother, Brendon, will be doing all five rounds unless more sponsorship can be found.
