If I have a house in a trust under my name can the trustee take it?

This is a trust and estate question not a bankruptcy question. You would need to seek to have her removed as trustee for the trust. The trustee has a fiduciary obligation to administer the trust. If they violate that duty they can be removed for the instance you described.

A trustee is someone who has a heightened responsibility to the beneficiaries of a trust ( you and your brother). It's called a fiduciary duty. Your mother likely has no right to the property in the trust or the profits from it, though she may have a right to be compensated for her work as a trustee. If she has taken property or profits she is not entitled to, you can sue her for breach of fiduciary duty and have her replace as trustee.