Help, time is of the essence my mama is on hospice. How was POA and everything switched?

Help please this may be a long shot I'm in VA. I was my mother's caregiver for years and helped my step dad though they aren't married they lived with me for 5 yrs. In may he moved them out, we both were POA since 2015 she's on hospice since 2015 I have all forms where I'm care giver and nurses stated she's confused on numerous visits with the signed sheets. Now I'm only allowed 2 days a week scheduled my "step father" is on a power trip. All of a sudden he is POA no papers shown. She's on high medications how is this possible and bedridden. Can't walk and so much more. I'm running out of time with my mama. She has told me numerous times she wants me there she wants to see me but doesn't want to argue with him it's his house. PLEASE HELP ME WE ONLY GET ONE CHANCE THERE IS NO SECONDS. This is my mama.. TIME IS OF THE ESSENCE I'M A SINGLE MOTHER AND HE FIRED ME. FORGED HER NAME ON DISCONTINUE OF EMPLOYMENT FORM I HAVE ALL OF IT. PLEASE.. HELP ..