Is it normal i'm not into anal play as much as she is?

I've been with someone almost a year and we've been bringing everything up a notch over the last few months. A few weeks ago we were soaking in the jacuzzi and she started to do some anal play with her fingers on me...felt good so I let continue, next she asked me to go on my knees and face away from her and the fingers were joined by her tongue. She's done this about 5 times since. Stimulation feels great and everything, but I'd rather be inside her but it gets her so fucking wet.

She's now talking about a butt plug....not sure about that, I'll try anything once though I guess. She knows my favorite is two hands, lube and her mouth on my cock but I think the anal thing really turns her on. I find that really weird.