My mom did her will 4 years ago. I am the oldest child and have taken care of mom and Dad for over 15 years. Dad has passed 5 years ago. Mom failed But I stayed with her and took care of her as long as I could. The other 2 (sons) have taken money from her, stole her coin collection and have not been in touch for years. BUT they went after her before my Dad's grave was buried and got $13,000 each (gift) . Then it went on and on. The one step brother who is 8 years young then I has beat me up twice because I stepped in on all the money being handed to him, he was sneaky . I finally had to move out of state, I am afraid of him. Mom came also and I did my homework on finding her an affordable place to live with Medical care as she needed at this point. No help from the boys.. She has dementia . At the time of her will, none of the dysfunction was predicted. I feel that if there is even a dime left the boys should get nothing. One son lied and said she took an overdose to get her removed from her house so he could continue to live there free. It is shameful. I feel neither one of them deserve a penny. Meanwhile, the list of what I do and paperwork is unbelievable.. Can if need be, contest the will based on the fact I took care of my parents? Also the fact that thousands were handed to the boys after Dad passing?
If you have moved your mother away from your step-brothers - are denying them access - you are likely doing yourself and your situation more harm than good. Should you be able to change the will or create a trust, you are giving them ammunition to challenge using reasons such as undue influence and isolation. I'm not saying that's what you're doing - just playing devils advocate. In addition, some states have passed a "visitation bill" making it illegal to deny access of an elder by other family members. This bill was introduced and is lobbied by the daughters of American disc jockey Casey Kasem, who's wife denied access to her step daughters to see their father. This legislation is also pending in many states.
Do yourself a favor and seek legal advice before you do something you'll regret.
And while this is just my opinion - you're kidding yourself if you don't see that this is indeed about punishment.