I made my GF scared during Oral

Sorry for such a vulgar post, throw away for obvious reasons

I (18M) and my GF(17 F) of a little over a year were hanging out earlier today, and being horny teens we got into some stuff. We stuck to oral sex and was doing that for a while, when during it I got cheese grated (if you are unfamiliar, look it up). I was in some pain, not enough to be mad but enough to hold my junk for a while. She seemed upset with herself and defeated, saying “I don’t think I’m cut out for this.” Some background is that I know she likes things on the rougher side and I know she enjoys performing oral sex. Especially things like “throat-fucking” she has seemed to be into. Trying to move on from being cheese grated and trying to make her feel better I moved to something familiar which was “throat fucking”, and gave her time to breathe and talk if she needed, she was actively engaged the entire time and from my knowledge was having a good time, and after I finished I cleaned her and myself up and she was distraught. I asked what was wrong and she said she felt bad about cheese grating me and thought that me doing what I did was because I was angry with her. At this point she was in tears and I assured her I would never do anything to her physically out of anger and that my intentions were to move to something she liked to try and make her feel better. I apologized profusely, telling her I loved her so much and did not want to make her feel that way, and held her for about 20 mins. She eventually started to sound and feel better, and I needed to get home so I left. She told me she still loved me and she accepted my apologies and she knew I had good intentions. Just wondering if there’s anything else I can do at this point to help her, I love her a lot and don’t want her to think I could or would do anything like that

TL;DR: After getting hurt during oral sex, I got too rough with my GF trying to do something rough that she likes, and she believed it was because I was angry with her but I was never angry