Condo association has lien on unit.  What happens next?

Condo Association in Florida.  An owner in mortgage foreclosure and upside down in the value of the unit, abandoned the unit and owes over $6,000 in unpaid maintenance and assessments. We have a lien on the unit. She has executed a quit claim deed to the association and we have title subject to the mortgage foreclosure. What happens to the debt the owner owes the association.