Your family shouldn't possess that much power over you and your own emotional truth. Talking is the only way out.
My therapist compared keeping quiet to a prison. And the he used a metaphor which dazzled me a little bit, he said How do you think the mafia keeps their control? - By making everyone keep secrets. That thought set me free to a certain extent. The only danger consist in not talking and not believing in our own self-worth.
It is a process. Stay strong. You are NOT in the wrong here, your family is
Big hug! <3