did i do the right thing

i was talking to this trans girl online for months, we used to chat about normal stuff, college, life. we recently did an audio call and like- she was talking about really uncomfortable things, which idk how I'm supposed to feel about, but it took me a few days to figure out i am disturbed regardless.
she was talking about chastity belts/ cock cages. it actually sprung up out of nowhere, and then sex and related topics. i wasn't ready, i thought it would be a light conversation. at the time it didn't register, but it's been feeling so wrong recently. so i confronted her about it on text. but i feel like I've done something wrong and that i have some internalized transphobia.
am i being overly sensitive? i don't know any other trans girls, so anyone over here could you please educate me whether chastity belts are like something you guys casually talk about, cause before this i thought it was purely a bdsm thing (something im vehemently repulsed by and against firmly)