text: I dont know where you are from but here in the states your sister could or can not keep you from seeing your mother if your mother wishes to see you. Second if the property is in your name still then you have every right to it and your sister cant say a word. Well she might say a word but she wont be able to do anything. I wish that your mother could get better but you said she is terminal  and I really dont like saying this but I guess you have already pretty much prepared yourself for her passing when she does pass away if she didnt make a will anything that was or is in her name will go into probate and if there are any outstanding bills what ever is in her name will be sold to pay the bills and what is left divided between her children. If the property and the house are in your name you have nothing to worry about other than making sure that there are no deliquint taxes owed or anything else in which everything could get repoed. I dont know what kind of lawyers you are talking to but they dont sound very helpful. If you have the paperwork on the property and house then I would just go to the local police with the paperwork and have one of them go with you so you can check on the place and you can go to court to have your sister kicked out if she is living there.  I cant think of the name of the organization right now but I know In california if a family member is not allowing you to see your mother or whoever it may be they will go with you and make sure you area able to visit with the person. I would defintily get in to see your mom if I were you so you can find out if she has a will or not.