Coworker filed HR harassment complaint over gum—how do I handle this?

This has to be the most absurd reason to be reported to HR. I can not make this up at all one of my co workers reported me to HR for asking for a piece of gum from her client. This has to be mental illness of some kind (we work with people who have mental illness) but for a professional person to walk into HR as busy as they are sit down and look them in the face and ask them to write a formal complaint against me for asking for a piece of gum from their client has to be studied. It’s only a complaint notice so I am not worried about my job but the level of pettiness that is a new low. They said that I stookup their client for a piece of gum and made them feel violated, but because multiple clients (mind you all on this person’s caseload) started crying and sharing how they felt violated and uncomfortable. I feel this is a personal attack because when I tell you they have never been nice to me and said I’m harassing them. I laugh at their jokes and we work together (apparently that is making them feel uncomfortable). so they had to move to another shift to get away from me. When i tell ya’ll I could care less about this person and we are not friends this is a workplace not high school. This is some weird calculated stuff cause you report me the day before you leave. I’m honestly glad they are leaving they were not nice to me and i really tried to be nice to them but they made it seem like I’m obsessed with them. Now i have to watch my back because i have HR watching me and their friends (my other co workers) don’t like me either so I wouldn’t be surprised if they reported me too. Advice? It doesn’t really bother me mentally its just petty

Coworker filed HR harassment complaint over gum—how do I handle this?
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