I'm thinking of caring less about a girl because she falls asleep while texting with me.
I'm not sure why that makes you upset so much?
It is selfish of her to let people wake her up by staying up late for her
She should be more awake when she tries to text you. It's not nice to leave people hanging like that.
She always ignores me and doesnt care about my feelings.
If she's falling asleep while texting, then that's because you're texting too late at night. It is probably a sign that she likes you and you need to just explain to her that you don't like it, and I think that she will be understanding.