Sensitive Subject: Older Owner. Lifetime Use/Right of Refusal

[William Coet]

How can an offer be done respectfully:  Background: The owner of the home has no children and it is her childhood home.  She is strong-headed but also not in a great financial position.  She is relatively healthy and not "elderly".

What is the best way to approach this in a way that will keep her happy and in her house, but also put us in a position to be able to own the house now or in the future?

Thank you