Finty makes no sense to me; probably if I knew the context in which it was first used, I could give it some thought.
Tara is my problem name out of the three.
Cressida Frances or
Frances Cressida would be rather nice.
Tara has pronunciation issues: does it rhyme with
Sara or
Sarah? Or is it more like Tarra, like 'marrow' with an -a instead of the -ow?