I would issue an email memo to her along the lines of: "Due to your allegation against me which stem from a lack of understanding and empathy for my medical condition, I have been advised* to limit my interaction with you to emails, texts, and chats which can be saved and referenced later. You're a valuable contributor to the team and success on this project would be difficult without your input. I hope you understand the need for this precaution and I look forward to our continued professional collaboration."
*You don't really need to say it was some rando on Hacker News who advised you... though if you're really concerned I would be proactive in contacting to HR first rather than being the one to react to an accusation. Citing your Asperger's and that she's being insensitive to your handicap, which is deeply hurtful and is leading to a hostile work environment might work too... allegations can go both ways and I presume you can document your Asperger's and she might not be able to document anything. Of course, you might want to get REAL counsel rather than just mine.