I'm super sorry to hear that. You're definitely not being too sensitive at all and I think you're handling it the best you can. I'd probably do the same. If they don't want to listen to how their actions make you feel, you have to do what you need to to protect yourself. If you're in th US there are som good and supportive organizations you can join. I hope your family one day realizes how fucking shitty their behavior is and sincerely apologizes.