Does Black Swan show child abuse?

Hey everyone. I just finished watching the movie Black Swan and I'm doing my psych paper on it. I know that in the movie Black Swan, Nina experienced sexual and emotional abuse as an adult but the movie didn't explicitly show her being abused as a child. I know for a fact though that she is treated like a child though seeing how her room is like that of a little girl's and how her mother is always in control of her life. I'm pretty sure she was abused as a kid though. Please, if you guys can help that would be great. Thanks!