My mother just died 4 months ago three months later my stepfather died there is only myself and my younger sister she wants me to sign over my rights

My sister won’t let me get my things out of our mothers house she said sign papers or you won’t get anything she already took everything she wanted and wants to do a state sale my childhood memories and my children photos are in the house she has people calling me bullying me and said sign or you get nothing she is my younger sister before this she says she loves me intill the paper I said why can’t we both be ministrative To mothers estate 50/50 she will not talk to me I have many texts from her and others not in the family bulling me saying sign by Monday or you get nothing she lied about wills and everything I don’t know who my sister is anymore I’m in loss of losing our mother and stepfather I don’t have a lot of money everyone says do not sign think of your children she also took piggy banks that left to my boys her and a cousin from our stepfather go in the house and do as they please keeping my memories that our mother put together of myself and our family photos I need help