You need to speak to a probate lawyer about this situation. I also assume that your mother was living in California at the time she passed away.
If the house was outside the trust at the time of your mother's passing, then rights to that house are determined by your mother's will. If she had no will, then rights to that house are determined by the laws of intestacy. If the laws of intestacy apply, then you would have a right to an interest in the house, though it is not clear how much of an interest you would have.
The probate lawyer will need to review the will and trust documents, in order to properly advise you. I have done this kind of work before, and know that it requires an attorney's assistance. It is not something you should try to do on your own. I also would be happy to speak with you about this matter, if you desire.
Best of luck to you.
I agree with Mr. Perry's answer and that you should consult local probate counsel.
Your brother's attorney is probably going to file a Heggstad petition in probate court to have the house governed by the terms of the trust since you advise your brother is the sole beneficiary of "her house."
It is not a done deal as the court will have to rule on the petition and there many facts which will bear on that decision. So, the early retention of a probate attorney to represent your interests is essential.
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My colleagues have provided you with sound advice. You need to consult with a local probate attorney right away to review all of your information so that you can make informed decisions. The failure to put the house back into the trust might be overcome through a Heggstad petition. This is not going to be a do-it-yourself task.
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