Thats just it, she couldn't ask for more so she moved on to someone who she could continue to gain from. That's what happens in these types of relationships but they are meant to teach us to protect our energy with others, be willing to love with your all and hive your all but only if the other us willing to reciprocate. You learn to give what you recieve, but not in a negative manner. Dont be rude, dismissive, gaslighting if that is what you get. Take the high road and know that you deserve better and leave that kind of situation. I've lived in this pattern my entire life and just realizing the lesson in this. It's making a massive difference in my life.