land given by a lovedone

I have been given some river front land from a good friend that is in her late 70's with alzheimer's, we have been the best of friends for years now and her familey has nothing to do with her at all and we are basicly like her only family even though we are not related. I'm just wondering if there maybe a legal problem when she dose passes on that her family may fight us on this matter even though they have nothing to do with her at all?

When we did the transaction of the title change I paid her 5 dollars so that it would be a legal transaction according to the title company and in her will she gave her kids only a dollar that way they may not be able to dispute it I hope, but as long as she is alive she has full use of the land.

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