@Lilisionnach It was only one image. According to presence rule of this site, it doesn't count if only appears on very few pages compared with the rest of content.
per Gallery Tagging rules: Gallery-wide Tags - 1 image is enough to qualify or disqualify most of these tags. Omake/covers/credits/colophons are ignored. - Gallery wide tags that indicate the gender of the participants, for example sole female, males only, etc. allow for minimal amounts (no more than a single page) of conflicting content so long as the depicted actors are not vividly displaying sexual activity beyond nudity, and are not real or in-universe participants, e.g. being depicted in a magazine.
Per the females--only tag: All sexual, fetishized, or intimate interactions in the gallery are strictly between females. Requires at least two females interacting.
Thus, page two's depiction of vividly displayed sexual activity negates the females-only tag.