..... "that's criminal", but I am not making light of her situation.
I wonder if in this day of DNA evidence fingerprinting has become lax.
Anyway, in light of the fact that 4 or 5 paid for attempts have been rejected, do you think that perhaps she might contact your local FBI office to see if they could help, or at least offer advice? Perhaps they know of some other agency that can take accepted prints. )maybe military recruiting offices?)
My city also has a sheriff's department.
My wife is going down to the police station for the 4th or 5th time to be fingerprinted as a school teacher. All other attempts to get good prints have failed to be readable. Each time she goes, a fee is collected even if the prints are rejected by the state's Bureau of Criminal Investigation where they are to be put on file. It seems to me that, with all the high tech used to get good prints so far to get a good set, if she commits a crime she's not going to leave fingerprint evidence anyway. What's the use?