Is Bran unraveling? No
Is Bran frustrated? Yes
I understand that Brandy has suppressed feelings for a very long time. Brandy has been so politically correct her whole life, and I think the grooming has caused her to not know how to express herself. It reminds me of a child who is having tantrums because they can't figure out how to get what they want. We begged Bran to stop being so humble and overtly positive, and no she is going to the far left. I don't blame Brandy, I blame the people who have ignored this girls feelings her whole life. She's 30+ now and it's sad to see her still in search of herself. This will pass and in a few it will be a moment we laugh at. As for now Brandy just needs a sincere person in her life, not to tell her how great she is. But simply to affirm all that she feels and can show her more mature ways to let that out.
It will pass.