I know its a lengthy name, but I love it! I just need some more nn ideas because I don’t like [name]Chrissy[/name] and definitely not Mum.
Perhaps just [name]Chrys[/name]? Or maybe Sanny?
[name]How[/name] about the name [name]Annie[/name]?
I’m looking for something a little more unique than [name]Annie[/name] and [name]Chrys[/name] sounds too masculine to me and Sanny just doesn’t feel right. But keep the ideas coming, I appreciate them!
[name]Anthe[/name] or [name]Xanthe[/name]? [name]Sam[/name], [name]Sammy[/name] or [name]Thea[/name]?
Santha
Santhy
Rysa
So far I like the nn [name]Xanthe[/name] and I do like [name]Thea[/name], but is that too much of a stretch?
Fyi you might consider just naming her Chrysanthe, which is Greek for ‘golden flower.’ Chopping off the mum bit makes it feel more name-y, more accessible, and reduces a possible route to teasing.
[name]Rissa[/name]? [name]Chryssa[/name]?
[name]Mimi[/name]
[name]Annie[/name]
[name]Thea[/name]
[name]Sana[/name]
[name]Theo[/name] would also be super cute on a little girl 
My sister [name]Anthea[/name] is just Anth or Anthy. That could work.
[name]Rhys[/name]/[name]Reese[/name] and [name]Sandy[/name] are my favorites
[name]Rhys[/name]
[name]Santa[/name]
[name]Teddy[/name]
[name]Thea[/name]
[name]Antha[/name]