When is personal property considered abandoned after a non-marital relstionship has terminated?

MS ended relationship in May of 2012 and moved out of home couple mortgaged together. MS kept paying joint debits as agreed until June of 2013. MR took over all payments and has obtained permission from lender to assume mortgage singly. MS has refused to sign documents, even though she initiated removal from mortgage note, until she has completed a walk through of home to recover random personal property. MR has delivered numerous pick-up truck loads to MS after 5/12 and MS has returned to the home for items herself. Is the request to get 1/2 of the dishes, items that were given to the couple by her family and other small items a valid request or are the items considered abandoned? Couple was never married. MS has never changed address formally with post office but has changed some items. MS has also sent letters using current dwelling as return address.