tbh i’m probably in the minority here but i think a lack of male interaction is like the least weird thing about her
some people just have no interest in dating and she doesn’t seem to be particularly insecure about it given that she never makes posts trying to justify that aspect of her life like she does about going home etc. i don’t think she’s uncomfortable with them.
plus i don’t blame her- uni isn’t exactly the place where you’re going to find men worth spending your time around lol (and speaking from experience humanities courses also tend to be majority women)