What should the ma'mum do if he thinks he missed a rak'ah behind the imam?

Question:
A woman closed her eyes during the prayer. When the imam prostrated in the prostration of recitation, she bowed. When the imam stood up, she thought she had missed a rak'ah, so she performed it. She caught up with the imam while he was standing, then she prostrated the prostration for forgetfulness. Is this valid?

Answer:
This bowing is extra, and it was not intentional. She thought he was bowing when he was prostrating. When she realized and knew that it was not a bowing, she has to follow the imam. She has to follow the imam, bow with him, prostrate with him, and complete her prayer with him. As for the fact that she bowed in place of the prostration of recitation, that does not harm her. Yes.