My parents are divorced and remarried. I have a brother and my step mother (DSM) has a daughter (so my step sister).
DF has quite a lot of money squirreled away. He has worked at a high level most of his adult life. DSM worked part time all her life and never contributed to any bills, mortgage etc. (DF has told me this).
The other day he told me that he and my DSM have a will that states if one dies, everything goes to the remaining spouse and when that spouse dies it will be split three ways between me, DB and DS-Sis.
He's not in the best of health and it's highly likely he will pass before her.
So in that event, is there anything in place that would prevent DSM changing her will after to give everything to DS-Sis? (This is likely, given the type of person she is).
And before you all jump on me, this isn't about me trying to get my DF's money. I honestly couldn't care less if I inherit anything or not. DH and I are already substantially well off.
But I'm curious if there is anything in place to protect DF's last wishes. Plus DB isn't as fortunate as me and I wouldn't want him to lose out.