“Poppy was everything to (Louise),” Ms Collins’ brother James Curtain told the Courier-Mail.
“Family meant everything to you and our hearts are breaking, as we ponder a life without you and Poppy lighting up our lives,” sister-in-law Leesa Curtain added.
The family was travelling in a white van near the town of Nagoda, on the island nation’s southwest, when the vehicle struck a parked truck.
The van flipped, and Louise and Poppy both died at the scene.
Her husband Patrick, a Qatar Airways pilot, is currently in intensive care, suffering a severed bowel and broken ankle.
Ms Collins, who was the youngest of seven children, is remembered as a woman who was family orientated with a huge heart.
Mr Curtain told the Courier Mail his sister had a loving nature and “vibrant” personality, and paid tribute to her ability to care for her wider family in Brisbane, despite living in Doha, Qatar.
“Through all this grief, what does bring some comfort, is knowing you and your darling Poppy are together, forever. The world has just lost two angels, but then again, angels don’t pass on, they just shine brighter in another realm,” Leesa said.
“Every once in a while there is a moment when time stands still. On the 20th June we lost our beautiful Louise Collins (nee Curtain), 37 years, and her daughter Poppy Collins, 4 years,” she told the Courier-Mail.
Ms Collins met her husband through mutual friends in the commercial airline industry.
Mr Curtain said the family loved Sri Lanka and were on a “short holiday”, enjoying the country’s “tranquillity, peace and calm”. (Courtesy News.com.au)