Good Luck, and don't use a reverse if the senior is going to leave the house to their heirs, the heirs will have to pay in full (the amount of the reverse plus all fees and deferred interest payments over the term of the loan) upon disposition.
A reverse mortgage purchase can involve additional costs, but these fees, which are regulated, can be added to the principal balance, so that there will be no out-of-pocket expenses, other than the down payment. If you are 62 years old, for instance, you can purchase a $250K property, putting only $125K down (50%), and make no payments, ever, for life. The typical qualifications, such as credit score and income are not at all used to qualify. I work with several lenders that are available by phone to consult with you regarding your particular scenario.
I will be happy to email you the January publication of Quick Facts, a compilation of articles pertaining to aging, longevity, and the mature market prepared by the Mature Market Institute. The link at the bottom of each subject takes you to the complete article. You may choose to share some of these articles with your friends and family members as well. Hopefully, the articles bring some clarity to your current quest for answers...