I wouldn't assume
Faith's parents are particularly religious, because it is so popular around here amongst various people. I think
Faith is my favourite one of the three.
Hope tends to be a popular name for preemie babies or babies who were ill when they were born - I find this a little cheesy and obvious.
Grace is nice enough, but I think it would be too ironic if she turned out to be big-boned or really clumsy.
All three names are really popular where I live, but
Grace is probably most popular.