
It is unfortunate that you are being prevented from visiting with your grandmother.
By signing a power of attorney for health care, your grandmother gave your aunt authority to make health-related decisions for her when she cannot make them for herself. The power of attorney does not give your aunt authority to override any decisions your grandmother makes for herself, nor does it cover any situations that are not health-related, such as visitation.
I do not know if your grandmother is able to make decisions for herself. If she is competent and has said that she wants to visit with you, then she has the right to see you. But, if your grandmother cannot let you into the house, that does not solve your problem.
Your aunt's sudden refusal to let anyone into the house could be a sign of another issue. I suggest that you try to have a conversation with her to find out why she is doing this. Explain your concerns and try to understand hers. Perhaps there is some underlying family issue that can be worked out. If not, you may want to contact Adult Protective Services. They may be able to get involved if, in addition to not letting anyone in the house, your aunt is not providing adequate care to your grandmother.
Tonya R. Coles, Attorney at Law
Elder Law - Estate Planning - Probate
www.tonyacoles.com