Since house was changed to my name, she is holding mom as leverage. She is wanting for me to change name back to mom, so she can probably change to her name and sell it. She does not care for our mom, and has brainwash my mom and older sister for years. She has taken mom to doctor to put her on a "Brain Medicine" whatever that means. She is trying to build a case to show mom has dementia, and was incompetent so transfer of house is in valid. Now my oldest sister's husband, has custody of her and is trying to sue me. We have reported my sister to APS, in the meantime, how do we take back custody of our mother.
If the Deed is in Mom's name and you inherit the house, when the time comes to sell, the "basis" for calculating Capital Gain goes only back to the day that you inherit the house. Double check with a Tax Accountant/CPA.
As for getting custody of your Mom, you may need to consider Guardianship. As mentioned earlier, contact an Elder Law Attorney.