I have this girl who I'm dating which is a good LTR material who I've been pushing to do some very mild kinky stuff just for a start. She's a quite conservative non American girl. After resorting to some emotional tricks she complied to my request but a couple of days later she started to shit test me saying I'm too much of a selfish guy and she doesn't like it. She tried to argue for two times. First I agreed and amplified and it was over. The second time I kind of dismissed joking around and making it not a big deal the exchange lasted longer than it should. She even called me out saying I emotionally blackmailed her. She's smart. This is the first time I find a girl who hold her stance so firmly. I know most important is to hold my frame and roll on. I'm looking for options of what to do next, specially if I have the filling to be close to the breaking up deal.

On the side, how reward the girl after she complies if you had to work to convince her and you know that for the next time you'll have to work this out again?

Edit: clarity.