I think it would be alright as a mn, but I wouldn't use it as a first name. I wouldn't want to use it as a first name because Twilight kind of ruined it for me. I prefer
Isabelle now. Both
Cecily Isabella and
Daisy Isabella are fine.
I don't know any
Isabella right now but I think when I helped my aunt teach gymnastics there were some little girls named
Isabella. I don't know any Isabellas in college though