Well I can see how that would be upsetting. For someone to judge you to be "too proud' to accept their advice,
can be incredibly frustrating. It does not sound like there as any basis for them saying that, either!

Yuck.
Would it be possible next time you are feeling judged (and you know right way) to simply point that out? I am just saying this because it is possible you might be surprised. It could be that that guy that said that wasn't really talking about you or that other people don't agree... I don't know.. (and you don't either until you speak up!!)
But the fact is, it's not really up to them. They don't know what it's like to have your sibling.
So happy for you that you figured out why you were crying

. Hope next group session goes better!