I feel like the OP and a few others in this thread have been subject to the new "short term" therapy style, in which the T sounds a bit like this: "What's your goal? Okay, here's a couple coping mechanisms and some homework, I expect this to be all fixed in 4 sessions."

OP, I think that if you were very upset because family members felt you had been disrespectful, this probably gets into deeper family stuff, and is not just all about this one incident. Maybe you haven't felt fully accepted and this felt like a rejection to you, for instance, which would explain why your reaction was so strong. Your T (in my opinion) should have treated your strong emotional expression with a little more care, and explored it a bit, rather than just prescribing you some more homework ("Apologize to your grandmother")-- that doesn't feel very thoughtful to me. And if you still feel that your emotions and thoughts around this issue are confusing, then it's the perfect material to bring to therapy to try to sort out. But if your T is the "short term" style, she might not have the patience or skills to help you sort it out. A family systems therapist or something like that might be better.

Could you consider seeing another T, just once or twice to understand all your options?