I was talking to a girl a few days ago she used to be normal talkative and we laughed a lot, but lately I’ve felt a shift in her energy. (Nothing happened, the conversations were normal.)

She still replies, but her messages have gotten pretty short. Should I keep the conversation going, or just let it fade?

Should I bring it up, give her some kind of ultimatum, or simply move on? What do you think?

((I generally don't do correspondance, i FIX a date, this was just a special case for some reasons))