People say Clara is stupid, and weak, and that she judged the Doctor. That she didn’t liked him anymore because he was old.
You know what I think?
I think the whole problem was that she was scared. Think about it. She have been with old Doctors before… as we could see, she had no problem with the first Doctor. But her different echoes had only one Doctor. She saw her Doctor change. Into a complete different person.
The problem wasn’t that he was old and she didn’t liked him, the problem was that she saw him CHANGE and it broke her.