It's funny because I know you speak about the "main" heroin as Alice, but the story is built around the idea that there is 17 alice in the game (more or less).
For your answer, yes she only had 2 sex scenes in her chibi form and I'm pretty happy they didn't go harder on this because yeah chibi...
But she has 7 scenes in her adult form if you want.
This game is based on quantity and diversity of cast. The only common point is Luka. The other are a vehicles for some form of fetish or some artist artwork.
The relation with alice is more around her story and her fight for her destiny and the destiny of the world than just being another sex scene in a game full of them.
If you want more you can go look on the visual novel or on internet.