covertly?

There's a long entry in Wiki about Angela_Brazil, but let me snip this part for you...
Interpretations of lesbian content

It has been suggested that Brazil's tales were intended to be covertly expressive of lesbian themes. Her stories of friendships between girls do include kissing between pupils and less frequently between pupils and teachers, and also elements of adolescent jealousy. It is possible that Brazil, writing about her own youthful experiences of schoolgirl life, was completely unaware of these implications and passionate friendships between adolescent girls are not uncommon. Nevertheless, the tone of the relationships in her stories was highly sentimental and might be interpreted as having erotic implications. In fact, Brazil seemed particularly attached to the name Lesbia, which was given to several important characters: Lesbia Ferrars in "Loyalty to the School", for instance, and Lesbia Carrington in "For the School Colours". Both of these seem to have been largely self portraits, suitably idealised.

Lesbian Mary-Sue?