I am telling you that every day people challenge Wills with little or no proof. I never said you were guilty or would be considered guilty. You are confusing estate and criminal law.
I am saying that the other heirs could challenge the Will based on undue influence. They would then have to prove the influence. If the testator flies to YOUR City to have the Will prepared I see a legal argument. Their proof would be that you were instrumental in the preparation of the Will which benefited you. Will they win? I have no idea.
Personal experience - friend of mine died; had rewritten Will; the person who DROVE her to the Attorney received a large bequest. The other heirs contested. Took 3-1/2 years and a ton of legal expenses to settle.
So save yourself the trouble of explaining later by protecting yourself now - or don't, as you see fit.
If this is related to the P/A I see problems unless this is handled carefully:
https://www.askmehelpdesk.com/other-...ey-354761.html.