Draw a mental line straight down from the corner of her mouth.  The face usually develops a network of wrinkles along that line, which is the border between the jowl and the chin.  The peel worked quite well on those lines of hers.

She may also be one of the unusual patients who sees a small improvement in the jowl itself from the peel, resulting from some skin surface tightening after the peel.  Typically, we ask the face lift to work on the jowl, and we don't count on any improvement in that area from the peel.