trust document

[capedory]

I have an aunt that inherited a reasonable sum of money and my grandmother put it in a trust. My grandmother set up the trust so that my aunt could live off the income but never access the principal. My sister and I are to inherit the principal. My aunt is mildly mentally challenged. My father has power of attorney since my grandmother died and wont show us the trust document. My father is taking advantage of my aunts money. He is also the executor of her will. He is not to be trusted. Do we have the right to see the trust document?