Where should I, add the comma?.

You don't.

This sentence doesn't need a comma, since there is not an independent clause to separate it or an introductory clause or phrase. There is nothing listed, so you wouldn't need a comma.

Hence, the sentence is fine as it is.

Let me down of any questions about my answer by commenting down below.

the answer is, a) she is angry with elnora for not standing up for herself.