Rosa

Rosa is the nonna (grandmother) of Samantha Mulberry as mentioned in the episode The Big Red World.
Sam mentions this after Pablo mentions going to Mexico to see his abuela and Sam replies "you got to visit your grandma?"
Just as abuela is the Spanish term for grandmother, nonna is the Italian term, which indicates Sam has an Italian background.
It is later clarified just before her appearance that she is the mother of Dr. Mulberry who grew up in Italy.
Category:Mulberry family
Category:Family members
Category:Mothers
Category:Parents
Category:Grandmothers
Category:Female Characters
Category:Season 3 characters
Category:Elderly characters
Category:Adults