Unlike her mothers, Iliana led a fairly idyllic life. She was a child desperately wanted by her then young adult mothers, and the product of scientific advancements. Her mothers had met when they were young, just eleven years old, on their way to board the Hogwarts Express for the first time; it was at King's Cross, she's been told, and from the moment they laid eyes on each other, they knew that was it. Or at least that's how Iliana likes to see it; in truth, her mothers didn't get together until they were in their third year winter break, and even after beginning to date, they faced their issues. The death of Malia's siblings, Lena's suicide attempt, a prolonged break from their relationship, etc. Suffice to say, there was once a period they doubted they were truly each other's happily ever after.
It was in the summer prior to their seventh year that Malia & Lena got engaged. They had gone on a summer-long road trip across Europe, with apparations here and there to cross tougher boarders. At the very end, on the eve of their return, they were sat on the hood of their rented car, watching the stars, when Malia popped the question. She was a stammering, blushing mess, and by no means did she consider it as romantic as she'd have hoped, but Lena had loved it and accepted - which as far as Malia was aware, was all that mattered. They didn't tell anyone (inc. their best friends Owen & Lili) throughout the course of their seventh year, revealing they'd been engaged for nearly a year now once they had all graduated. Their wedding ceremony didn't take place until a year after graduating, on a cool August evening.
Iliana is the first of four girls, and was conceived with the aid of science & technology just a year after her mothers' wedding. She enjoyed the benefits of a quiet life, and lived from the moment of her birth until her eleventh birthday at their family home in Coral Gates. Iliana was three when her younger sisters came along: Zoë Yevgeniya, in honor of Lena's deceased sister, Zenia Vasilia, in honor of Malia's childhood husband Vasilius Jo, and Zilya Polina. They were triplets, and as you would imagine, Iliana's life took a bit of an annoying turn upon their arrival home. They had been wholly unprepared for triplets, but with help and a little bit of magic, they made things work. They had their joint fortune due to their days playing professional Quidditch - with Malia playing for the national team after years of playing for the Catapults, and Lena retiring a little earlier to join the Auror Force - but Iliana still suffered.
Her issue wasn't the sudden lack of constant gifts, or no longer being an only child, but rather the drop in attention she received following the triplets' birth. That, and the constant, neverending crying. Wherever she went, oftentimes her sisters caused her mood to drop, with their incessant wailing. Of course, there wasn't much her mothers could do about it except sound-proof her walls and charm the triplets'. Despite their best efforts, Iliana still found herself constantly sulking, missing the way things had once been. From here stems her love for the outdoors. Having wanted a quiet place that could be just hers, Iliana had resorted to spending more and more time outside - playing, tending to the gardens, and avoiding her the disaster triplets. Her taste for the outdoors developed, and her magic's manifestation at the ripe age of six only encouraged it - unsurprisingly, it had involved quidditch, when she made her pointedly non-magic broom fly off to the hoops at the community quidditch arena. Her mothers had been playing with neighbors, and she had been grumpy she couldn't join them.
From that moment on, even though she had begun to tolerate the girls, she was rarely indoors. Learning how to fly and playing in the gardens consumed most her time, whenever she wasn't attending muggle primary & magical theory classes taught at the community's small learning center. This was reinforced when Lena went MIA, when one of her missions went sideways. To this day, she's still missing, and has even been declared dead. It hit her and her family hard, but nothing like how it hit Iliana. Lena was her favorite mum; she loved her more than life itself. And she was gone. The one who knew her best, just like that, gone. With her left essentially all of Iliana's hopes and aspirations. Even now, as she's approaching her first year at Hogwarts, she doesn't think she'll put any space between herself and the outdoors - after all, it's where she usually finds comfort. Plus at this point, it's just become a part of her personality.