Assignment of Interest re: real estate

Hi. A lady and her daughter were tenants in common with rights of survivorship. Before the lady died, she was annoyed with her daughter and decided to leave her interest in the property by assigning it to five other family members.

The Quit Claim Deed was recorded. My question is this, since it took two people, the lady and her daughter to agree to tenants in common with rights of survivorship, to change that wouldn't her daughter have to agree for it to be legal?

The lady has since died, and normally her daughter would have inherited her share, but the new Quit Claim Deed to five other family members has made a big conflict. With so many "owners" and no one to make the mortage payments, some want to sell, and one wants to rent (they have a potential renter)

So who has the legal right to do what here? Anyone know?