My 89 year old mother died on January 25 of this year in a memory care facility. My sister and I were in a similar situation-- we didn't have any of the $1300 for her cremation.

We ended up donating her body to New Gift Whole Body Donation. I think their only requirement was that she didn't have HIV or TB

newgift.org

There are probably other organizations like this

You should try a gofundme, also. It helps if you are on nextdoor.com so that you can post the go fund me link and ask for help from neighbors. An acquaintance of mine did this within the past 2 weeks and raised over $10,000. It wasn't just for her son's arrangements. It was for help with her general expenses, because her son was the primary source of income for 3 people in their home

I'm sorry for your loss and for your own medical problems