Was I being rude?

Hey all. Not really a women’s specific problem, but just a general situation. At work today, a family came in and was having trouble with one of their gift cards. As they were trying to figure it out, their son, who unfortunately had some sort of disability, kept winking at me and I’m very modest and shy so it made me a little uncomfortable but I didn’t obviously say anything because he had a disability and probably didn’t realize anything. So I mentioned it to my coworker and she gave me kind of an annoyed look and told me I shouldn’t make comments like that about disabled people and then walked away quickly and didn’t talk to me for the rest of the night. I just feel so crappy now because my uncle has lived in an assisted care home all his life because he’s disabled and I would never intentionally make a rude comment about someone like that. Should I just brush the situation off and pretend it didn’t happen or should I try to apologize to her for the comment? I have really bad anxiety and constantly feel like everyone’s out to get me or hates me, so I’m really worked up about this.