Names for a Harry Potter Fanfiction?

I want to create a Harry Potter Fanfiction that I might end up recreating for a story to get published. Anyway, the story starts after the last war, where Harry potter and the deathly hollows ended. Bellatrix and Voldemort have a daughter, who was left parentless, due to her parents both being killed during the last wizarding war. Or it seems so. The little girl was soon found by Draco Malfoy, who had abandoned his family's quest for power by following the dark lord Voldemort, and has since raised her as his own daughter. But what happens when she attends Hogwarts for the first time, and meets Harry, Ron and Hermione's children? Will her Parents come back from the dead?

I was thinking of using the name Halo. I want to be able to put a combo in with the name Halo, and have Halo as a nickname.
like Haloaria (Halo and Aria)
Another idea for a fanfiction i had is that Luna Lovegood has a daughter. (Can't figure out who the dad should be, but it's not the one that Luna marries at the end of deathly hallows)
Her daughter's name is pronounced like Soul-lee-ah) here's how it's spelled
Soulleia
or
Solleia

What do you think??? which one will work???

Please be nice and honest with your answers!!

also she has a twin sister named Lunette, who is named after their mother.