an update from this situation
https://www.furaffinity.net/journal/10485037/

so apparently my mom already bought a way cheaper alternative than the 300$ bed and got a folded backrest we can use on the bed itself
something similar to this https://www.amazon.com/dp/B07X9T18X.....pa_dk_detail_1

I am still opening my ko-fi for donation for my grandma, any kind of little help is appreaciated