I don't mind
Christiana. It's too flowery for me, but I don't mind it for someone else. I know a Krisanne, which I like better.
No,
Chris is no inevitable, but it will depend on what she likes. There are a lot of nickname options, though:
Chrissi
ChristiTianaTiaAnaYep,
Ana would work.
One momma namenerdin' in the fleeting quiet moments between
delighting in and losing my mind amidst my four kiddos
To peruse my top 100ish names:
http://www.behindthename.com/pnl/82589Bits of blogging here:
http://jodifriesen.blogspot.ca/And family cuteness here:
https://www.flickr.com/gp/41705