A "huge contingent" of people from Sumner and others from around New Zealand and as far away as the UK - where the Rumble family are from - gathered to celebrate the lives of Sally and Ella, family friend Wyn Mossman said afterwards.
"The service was gorgeous, elegant and simple, reflecting Sally's creative, kind spirit. It also captured Ella's zest for life and sense of fun," Mr Mossman said.
A photo slideshow showed a loving family enjoying each other and living life to the full, he said, adding: "A stunning reminder of what has been lost to these families and friends."
Representatives from both St Margaret's, where Ella had attended this year, and her old Sumner School, spoke fondly of Ella. A close friend of Ella's sang a musical tribute.
Ella's netball team spoke of her great love of netball, while a friend and teammate placed a silver fern uniform on Ella's casket, as it was one of her dreams to play for the Sliver Ferns, Mr Mossman said.
Tania Summerfield, Ella's aunt, spoke of Ella's love and skill of shopping but also of her "beautiful and sassy spirit".
Speakers also paid tribute to the third victim of the horror crash, Ella's close friend Abi Hone, also 12, whose funeral service was held on Monday, also at Sumner School.
Ella's casket was led out by her netball team. Classmates formed a guard of honour as it was lifted into the hearse.
Sally's casket was led by her close Sumner friends.
"The families wish to thank the public for all their love and support," Mr Mossman said.
"They now request privacy as they grieve the loss of Sally and Ella who meant so much to so many.
"We have lost our deeply loved wife, mother, daughter, sister and friends."
Johannes Jacobus Appelman, 52, has been charged with careless driving causing death in relation to the crash.
Appelman, on bail in the city, will reappear at Christchurch District Court on July 10.