A Modern Tomboy by L.T. Meade

Rosamund and Jane Denton shared the same bedroom. They had been friends from childhood, for they had lived in the same street and gone to the same kindergarten together, and their mothers had been old school-fellows before marriage, so their friendship had grown up, as it were, with their very lives.

But Jane was a girl of no very special characteristics; she leant on Rosamund, admiring her far more vivacious ways and appearance, glad to be in her society, and somewhat indifferent to every one else in the wide world.