80 year old Remarriage Hello, my grandmother is 80 years old.

80 year old Remarriage
Hello, my grandmother is 80 years old. She had a living will written up with my grandfather before he passed away 7 years ago. She wants to remarry next month. Her lawyer is saying she doesn’t have to change anything in her wills or trusts, he says the new husband will not be entitled to anything and that everything will be distibuted according to the current will and trust. I find that very hard to believe. I thought that at least it would have to pass through probate. I hope he’s right, but I’d like another opinion.
Thank you for your time.
Bryan