My question involves labor and employment law for the state of: CA

I apologize in advanced if this is the incorrect forum but my concern brings up several questions: When I put in my resignation, I got the feeling I was leaving the company on good terms. My manager even asked if I would like to be on a "on-call basis" if they need extra help. With only a few days left till my "official" last day, a co-worker has filed a harassment claim against me.

An incident happened between us on a Friday. Over the weekend, I mulled over the incident and just decided to apologize. Not because I was admitting any guilt, but because I felt that's was what "professional adults" do. But instead of approaching my co-worker, I wrote an apology note and gave it to my assistant manager to give. I gave my assistant manager the note because I wasn't sure if I should approach him. I was afraid if I did, he would immediately reject it and/or start attacking me either verbally or physically. At the end of the day, my manager called me into the office and told me he filed harassment charges. I was shocked. She told me to write on paper my side of what happened. In my mind, everything was telling me not to, but I felt if I refused it would imply fault. She then pulls out the apology note I had written and asked if I gave him that. I said "Yes. It's an apology." She told me, "I would include that fact in your explanation."

So here are my questions: Will HR proceed with the claim even though I only have 2 days left of work? If I don't fulfill my last 2 days of work out of fear, will this make me NOT eligible for re-hire? Can they terminate me with only 2 days left? If something is decided to "flag" my file, would I be able to find out after leaving the company? Honestly, I'm scared to go back to work. But I think there are "exiting papers" that need to be filled out. If I don't, is that job abandonment? Is it a law that companies have to cut you a check on your very last day, or can they mail it, or deposit it through your direct deposit account? In lieu of recent events, If I can avoid going back, I'd like to.

Thank you!