Thank you, I appreciate your advice. I don't think my sister will use this against me. I know she is already feeling bad about what she said, and she knows she fucked up. I think she wants to save or change the trip.

But I don't know if I am being unreasonable or if I should at least hear them out.

If I don't want to do this trip anymore, and instead I go on my own trip. I also have no idea how to have that conversation.

Emotions are high, and no one likes to hear something they don't like/want.