TIFU by my gf thinking I don’t enjoy spending time with her

I (20M) and my gf (20F) live a short distance away and both don’t drive, so we travel to see each other by train or by her mum and partner giving her a lift (I’m at uni so far away from my parents). Last Monday I asked to see her after work as I usually go up to her work, meet her there, come back with her and her mum and spend the day and night with her, then we get dropped off at her work in the morning where I then get the train back. She said yes and so I went up. She works at a nursery, and her 3y/o nephew goes there (her sister’s son). I’ve met him and my gf’s sister and they’re great, and my gf’s sister was picking up her son that day and unbeknownst to us they can back with us. We had a great day together and I enjoyed it a lot. I really wanted to talk to her that day because of uni, work and sport stress I was going under, including a big calorie deficit to make weight that I knew would have effects on me. I didn’t raise it up during the day as I was distracted by everyone being there and it felt great having my mind off of it. By the time my gf’s nephew left it was late, my gf went to make her lunch for the next day and sent me to her room. When she arrived we then had a shower and I asked her to talk as I wanted to get it out, she said yes but as I started talking she fell asleep. She had told me before that in that circumstance I should wake her up, and after a while of debating I finally did, I asked her if she could stay awake for 5 mins but once again she fell asleep. So instead I told her my problems to her unconscious body. It wasn’t the same but it would do. The next day we go off and we arrive at her work a little early, usually she’d go in and do some coursework but instead we had a little more chat before we went off. She sent me a snap and was saying that if I’m looking for an apology she can only apologise that she didn’t know her nephew was coming round, as she’s always gonna give him full attention when he’s there. I said I wasn’t looking for an apology as I wasn’t, I was fine about it and enjoyed the day, especially being able to take my mind off of all the stress I was under. I guess in my stress and extreme calorie deficit I was a bit more moody than I expected. I kept saying I wasn’t upset with her or her nephew or anything, but she kept pressing me to say things. But I doubled down and just told her the truth, that I wasn’t upset and although I didn’t get to talk I had fun. She’s since blown it up more and more, saying she’s insecure about whether I ever enjoy spending time with her and that she’s frustrated that I was upset while not telling her I wanted to talk. I can’t seem to convince her that I was never upset and that I love spending time with her. I haven’t seen her since (it’s now Sunday) and she hasn’t responded to all my messages but has now been ignoring my snaps since yesterday afternoon and my texts since yesterday evening. I don’t know what to do, I miss her so badly and I want to be with her rn. I feel so depressed and lacking any sort of control. Next Friday to Monday we’re meant to be at a b&b together as on the Saturday I have my race I’ve been training for. My parents are coming and staying at a hotel nearby to watch me race, and they’re gonna drive us there and back from my gf’s house. It’ll be the first time she meets them. I don’t know if she’ll want to come, I mean I know she’ll want to be there but I don’t know if she will come. I want to tell her that I love her and need her, but I haven’t told her I love her yet and I don’t think over message is best way, assuming she wouldn’t ignore it ofc

TL;DR gf is ignoring me because she thinks I’m not happy when with her because one time I didn’t get to talk to her about my anxiety because she fell asleep after playing with her nephew