This message uses the {{GENDER:optional username|text}}} function without passing a user name, so the default user name is the user reading the page ("you") and not the intended (fe)male mentor. Please pass that parameter explicitly.
Note: on the opposite, various messages in that message group are passing a username parameter (like $1) to the GENDER: function for the singular "you"/"your": this is superflouous in all these messages because this should be the default everywhere (though, this does not break, so this is not really a bug, but this is a sign that there was a confusion about what is the default user referenced).
So such messages should be like {{GENDER:|your}} {{GENDER:$2|mentor}}, but '''not'' like {{GENDER:$1|your}} {{GENDER:|mentor}}.
