Yeah, if you felt her contract then for sure, but that doesn't mean she didn't either. The best way to know is to ask her though since every woman is different!
not every female contracts when having an orgasim. it is a difficult one to tell if they dont.
sometimes the clit gets very sensitive after an orgasim so she might then push you away from it or ask you to stop and take a break. that is one of the sign, but once again, not every female is the same.
She was really enjoying the feelings you were giving her at the very least. Did you feel quick contractions around your fingers? If so, then she did. If not, then no.