Who is Gran Mollahan from Lily's Crossing and what is their importance?

Gram is Lily's grandmother. Gram is Poppy's mother. Gram is associated with warmth and comfort. Gram wonders sometimes what goes on in Lily's mind, but she knows her granddaughter is high-spirited sometimes. Gram feels things more deeply than Lily gives her credit for. Gram enjoys fishing and is not much of a housekeeper, according to Lily. Gram enjoys Rockaway just as much as Lily does. Gram is not very strict with Lily and usually lets her granddaughter go her own way. Gram is Lily's version of Nagymamma in terms of emotional attachment.