Even if you lied for you and not her then, how do you think she would react now?
She is 92. Does she have any ailments that stress can bother?
This is JMHO, and mine only, but if she is feeling good about the relationship with you now, why jeopardize it. It may be giving her peace to know that you are OK.
This is a very "iffy" situation. Use your own best judgement on this