Chloe (Rigalli's Grandmother)

Chloe is a recurring, rumored character in 98th Street School, she is the maternal grandmother of Rigalli and Deb's mother. She is estranged from her former best friend Boris Boyd; as seen in a old (circa. 1952) photograph in Boyd's Apartment (specifically in her bedroom) in the episode "Weekend at Boris'". In the episode, it is revealed that she is retiring from her unknown job and that Rob and Deb are going to her retirement party out of town and leave Rigalli in Mr Boyd’s care.