Severance offer, what should I ask for?

I was offered 9 weeks of severance after 9 years as an accounts payable clerk, and I have a few days to sign. This is my first time dealing with any of this. There is a non-disparagement clause. What did you ask for?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.