In the final book of the series, she refuses a slice of cake during Ramona's birthday celebration claiming that it is probably unhygienic and eating an apple instead, but soon afterward she confesses, in tears, her lifelong striving for perfection among adults, and her relationship with Ramona seems to improve afterward.
In the final book of the series, she declines a slice of cake during Ramona's birthday celebration by citing concerns over hygiene and opting for an apple. This decision leads to a moment of vulnerability, as she confesses her lifelong pursuit of perfection among adults, which seems to have a positive impact on her relationship with Ramona.