Coworker with boundary problems and attention seeking behavior

Hi all, I'm (38m) in a situation where a coworker (40+ f) who has over the past year become increasingly annoying and crossing an obvious boundary. She tries to randomly physically touch me, today she wanted to "get my nose" while I'm clearly trying to eat.

She has sent me inappropriate texts before to which I shut down immediately (which is a story in itself) so she knows what my boundaries are but still insists on trying to touch.

She's also developed a habit of fake laughing at things in what seems like an attempt to ask me what she's looking at, and generally making a noise just for the sake of making a noise.

This happens thankfully only during break time, so I'm not getting distracted when I should be working and I could also eat in a different room, but this would spark a conversation of why I had to move.

Any help for me would be appreciated

Thanks