well, sensei can be used if the speaker refers to that person as whom they respect. Or if that person is older. Sometimes in JAV the students and parents will say "sensei" or teacher. Just replace sensei with Teacher or teacher if its' too much for you.
I did replace it. It wasn't really a problem, since I already knew what sensei means. It just didn't make any sense to me to get a transliteration, and capitalized. It's a puzzle is all.