Highly doubtful. Maybe she should make an appt. to see what's going on.
no sex = no baby. the chances of her getting preggers by using the bath tub after he's had fun with "jill" is highly highly unlikely.
i have never heard of someone getting pregnant by getting in the bath water that someone as masturbated in, i think the chances of your friend getting pregnant that way is pretty slim. does your friend and her boyfriend masturbate together and is there any chance that any sperm as come into contact with her vagina?
If she hasn't had sex then she is not pregnant.
Sperm does not hold up very well in water. The chances of her getting pregnant from getting into his bath water are very very slim.