Can someone help me with a probate question?

I think it is probate. A woman my husband knows died, and her daughter wants to know what happens with her mothers house. She can afford the mortgage, and wants to keep the house. There is no will. No husband. The daughter does have a sister.

I am assuming they can do a quit claim deed, but I don’t know how the process works. Does she have to get a lawer, or can she just file paperwork herself? Where should she start?