Ann M. Martin
The Baby-Sitters Club #36: Jessi's Baby-Sitter
language
(Scholastic Paperbacks Oct. 29, 2013)
, Reissue edition
When Jessi's mom goes back to work, Aunt Cecilia moves in with the Ramseys to help out. Jessi is mortified that she has a baby-sitter and can't stand her aunt's bossy ways.