That's just how I portrayed her, of course that's not a necessity at all but there are for example girls IRL which are frightened of their first times and want to experience on their own beforehand, just to name one example. I agree with the defloration, I never saw blood in any AVN I played so that's something I'm planning to do the same.
I don't want to spoil anything about Janes story. The tattoo is on a visible spot, you can expect a choice menu to ask her about it when you see it clearly during upcoming scenes.
With she you mean Amber I assume, Amber and Alice are friends with benefits, if you don't like that, you can deactivate the lesbian content.
You don't have to do any commitments yet. You can fuck around with anybody but my current plan is to ask the player if he wants to commit to certain a certain person or a group of persons.