Yes, a girl can be a demiboy.
Demiboy is a gender identity describing someone who partially identifies as a boy or man, regardless of their assigned gender at birth. This means that someone assigned female at birth (AFAB) can identify as a demiboy. Gender identity is separate from sex assigned at birth; it is about an individual's internal sense of self. The key aspect of being a demiboy is the partial identification with maleness, not the physical characteristics associated with being male. Therefore, someone assigned female at birth can absolutely identify as a demiboy if that aligns with their gender identity. The important thing is to respect individuals' chosen pronouns and identities.
