OT will be able to permanently lend one to you. They can also help with adaptations to your living arrangements as well.
They completely reconfigured my nans bathroom and she had a fancy electric bed.
When she died it all went back so you don't even have to worry about moving it.
Whatever you do, don't let her get discharged without a descent care package in place and DO NOT say you will be her main carer. The more you do the less help you will have and let's be honest here you are no spring chicken and as much as you may want to help you need as much help as you can get.