I love the idea of [name_f]Pixie[/name_f] as a girl’s name, but maybe for a nickname? I just feel the need for something more formal for when she’s maybe in her teens or applying for her first job.
Has anyone got any suggestions?
I call my daughter [name_f]Pixie[/name_f], though it’s nothing like her name! It started as “Pickle” > “Pix” > “[name_f]Pixie[/name_f]”.
But if you want it to come naturally from her name, how about a P- first name with [name_f]Beatrix[/name_f] or [name_u]Alix[/name_u] in the middle?
[name_f]Penelope[/name_f]
[name_f]Priya[/name_f]
[name_f]Primrose[/name_f]
[name_f]Poppy[/name_f]
[name_f]Philippa[/name_f]/[name_f]Pippa[/name_f]
[name_u]Paisley[/name_u]
[name_u]Piper[/name_u]
[name_f]Paige[/name_f]
[name_f]Prudence[/name_f]
[name_f]Patience[/name_f]
[name_f]Pandora[/name_f]
The only name that comes to mind is [name_u]Phoenix[/name_u]
I think any P name would work.
[name_f]Priscilla[/name_f]
[name_f]Persephone[/name_f]
[name_f]Beatrix[/name_f]
Any P name would work but I feel like [name_f]Pixie[/name_f] is something you would call your daughter based on their personality or characteristics. I get nicknames Poodle and that is completely different from my actual name, I get nicknames it because of my curly hair.
But for P names what about [name_f]Patience[/name_f], [name_f]Patricia[/name_f], [name_f]Penelope[/name_f] whe [name_f]Penelope[/name_f].
As others have said, any P name would work.
I hope you find something you love!
And you could always name her whatever you want and just call her [name_f]Pixie[/name_f]! 
I agree with this. [name_f]Pixie[/name_f] is precious!