This character uses "uchi", one of the Japanese pronouns for "I", to address themselves.
A feminine or girlish pronoun often used in western dialects especially the Kansai dialect. Generally written in kana. Plural form uchi-ra is used by both genders.
Although the singular form is also used by both sexes when talking about the household, e.g., "uchi no neko" ("my/our cat"), "uchi no chichi-oya" ("my father") due to being common do not use such a usage as a trait.