I'm in a LTR with this girl for over 10months.

Today I bought myself a new phone. After work I drove to the LTRs house to cook some dinner and relax for the evening, as soon as I walked through the door I knew something was off. Since the atmosphere was shit I decided to play with the phone's settings some more, because I haven't yet set it up fully. And then she blows her cover.

Her: So you're not going to talk to me?

Me: You don't seem to be in a talkative mood.

Her: I mean I'm actually hurt that you say you don't have the money to take me to a SPA, but then, you buy yourself a new phone.

My brain froze, and I was very close to losing in and falling in to her frame, but I managed to catch myself and stay calm

Me: Wow, I really love how you manage to make everything about yourself.

Her: You don't even buy me flowers anymore

Me: because I don't feel like it when you're behaving like this.

She still said some meaningless shit about how I don't care about her while I got up, got my coat, and told her "see you tomorrow" while walking out.

I'm not really sure how should I proceed with the whole situation. Is her behavior next worthy?