My daughter has left the family home and taken her LO they’re having to sell the family home but he’s refusing to sign the papers he’s living there not paying the mortgage she’s currently paying and as always paid the other bills so there’s 4 months missed mortgage payments Upto now to be deducted on the final sale of the house which she feels should come off his share as do I but he’s saying unless she agrees via solicitor that the money after the sale is split 50/50 he won’t sign she is living with me along with my grandchild whom he hasn’t seen for 2 weeks not interested my question is can she push for him to sign as the buyers are desperate to be in or is she screwed and gonna lose everything?? As will just be repossessed due to missed mortgage payments