I’m so desperate

I recently had to move back in with my mom with my daughter to try to get back on my feet. My mom & I are really close & I usually tell her everything but last night her fiancé pulled me aside while she was bathing my daughter & asked if he could give me something but I can’t tell my mom because he doesn’t know how she’ll react. I said ok thinking it was something completely different than what I ended up with. He pulled out a vibrator from under the bed wanting me to take it for myself. Its so wrong considering you don’t get random women sex toys especially your fiancés children. I’ve never even got one from my past relationships & I can’t just up & leave I have no where else to go.