Complicated my gf (21) has a BPD and I used to it but a few days ago she told me that she doesn’t love me anymore

Hi I am 22 and my gf (21) has a BPD and I used to it but a few days ago she told me that she doesn’t love me anymore though a few hours ago everything was okay, I know that sometimes she tells things that she doesn’t means but no she also has a depression and don’t really want to talk to anybody even to me we started to talk less and she doesn’t wish me “goodnight” anymore, just falling asleep in the middle of the conversation… and it’s goes for about 2 days, we know each other for more months and I really love her but I am really worried about her, is there something I can help her or we just have to wait… there were similar situations but nor for 2 days