She wants to move in with me her daughter so I can take care of her. She is able to make decisions of for her self still. My stepfather isn't willing to let her move in with me, he wants her to stay in the nursing home. I was a CNA for the state of Florida for over 6 years and I know how to take care of her. She wants me to go and file for guardianship over her. Is there anyway her husband can stop her from moving in with me?
If she can still make her own decisions, she can decide to stay in the nursing home, go rent an apartment, return to her former home, or move in with you. A nursing home isn't a prison. A husband isn't in control of a wife who is legally competent to make decisions.
Would it really be best for Mom to live with you? Does she have some difficult impairments? Does her husband sincerely feel that she needs professional care that would not be possible for one person to provide? You may be better qualified to take care of her than many sons or daughters would be, but there still is only one of you. Depending on the nature of her impairments that could be or become insufficient. Have you had a heart-to-heart with your stepfather to hear what his concerns are and why he wants her in the NH instead of with you? Have you talked with the staff at the nursing home?
Where do you live in relation to the nursing home? Would she still be in the general area if she moved in with you? Could her husband visit her as often as he visits at the nursing home?