Is it normal i want to engage in father daughter role play?

My girlfriend and I have been dating for a few years. Recently we have been arguing and are generally more distant with each other. The arguments started when I discovered that she was chatting with guys online. She told me it was just for attention. All indication is that she wasn't trying to meet up or hook up with guys but none the less I was upset. After one particular fight after she was done crying we were able to have an honest conversation. She told me about how growing up she was jealous of her mom and all she wanted was physical and emotional attention and love from her father. This is known as the Electra complex. She only told me she had boundary issues with him and I know she was meaning that she had sexual feelings for him. Later on I researched Electra complex. I started by doing honest research to understand where she was coming from. I read articles by psychologists to learn more. I then read real experiences of girls explaining sexual fantasies and desires about their fathers. I have to be totally honest I have not been that turned on in a long time. It was a different feeling, kind of adrenaline and pure hormones. I started masterbating while reading of real accounts. I didn't know how to feel. I thought maybe I was excited because it was taboo. I still believe my girlfriend has daddy issues. Is it normal that I want to approach her about engaging in father daughter role play?