I'm pretty sure it wouldn't cover abuse.
Why not? Again, what constitutes a "firmly-held religious belief"? Indiana SB 101 stipulates that "a governmental entity may not substantially burden a person's exercise of religion...[unless it] (1) is in furtherance of a compelling governmental interest; and (2) is the least restrictive means of furthering that compelling governmental interest." Where's the governmental interest in this case? Isn't her right to punish her child - ACCORDING TO HER INTERPRETATION OF THE BIBLE - being burdened by the State?
So, please, list some things that CANNOT be argued to be "firmly-held religious beliefs".