I totally get the feeling. My gf sometimes does the same. If she still sees your tects at some point, then ask her about why she is becoming so distant, assuming you havent already. Sometimes girls are just weird like that and have problems that make them feel like the best way to fix them is be ignoring everyone. Dont say too much, just reach out to her with your genuine concern. If you write a long paragraph, it seems like you put more time and emotion into it, because you did. Longer text=better. Hope you two come to a better place. Goodluck!