Georgina Miller, a friend since university days in Wellington, said Ms Elder was "funny, generous, charismatic and loyal", but likewise did not suffer fools gladly or people who crossed her and "cut to the chase" when she had something to tell you.
In her early Wellington days, she had formed a social hockey team, which later morphed into a netball team named The Growlers.
The team could never be described as being successful on the field or court but had, by all accounts, been enormous fun and Ms Elder had shown a special knack for contesting decisions of referees.
The vice-president of the New Zealand Law Society, Mark Wilton, said Ms Elder had been a "very fine lawyer.
"She has been described as a defender of the weak and vulnerable, a strong advocate and amazing representative of the downtrodden - a champion of the people," he said.
Fellow solicitor Jock Blathwayt said he had lost a good mate and colleague.
The size of the gathering was testament to the fact she had touched many lives.
"Lou's clients were not just clients they were also friends," Mr Blathwayt said.
Not only was she a top lawyer respected by judges, her colleagues, clients and court staff, she was also a devoted mother, he said.
Ms Elder's brother, Nigel, spoke of their young lives when living in England before the Elder family emigrated to New Zealand and described his sister as caring, fun loving and family orientated.
Ms Elder's favourite music including I'm a believer by Neil Diamond and Bon Jovi's Livin' on a Prayer were played at the service. At a private cremation service the casket was carried to Dancing Queen by Abba and Cracklin Rosie by Neil Diamond.