I don't think she's weak. She went through a lot. Trauma does its work and just because she acts on it doesn't make her weak. It makes her feel vulnerable and it's very human. It's a good thing she has someone she can depend on, like everyone. Bro didn't went through the same thing she did.
Hmm she is too weak
Without the emperor she really is nothing
Even her resolve is weak
Ml constantly needs to keep reminding her