“I should prefer to have some boy bend them, / As he went out and in …” Birches, by Robert Frost.
Better a boy than an ice storm should bend the birches. A girl could bend them, as well, if a girl is in the house, and requires exploratory forays into a nearby forest. To climb a really tall tree is to gain a sense of accomplishment not available to parents and other adults who are well advised to stick to the lower, thicker branches.
And to have Mom worried that you might fall is to have an opportunity to show her, “No, I won’t.” There is no finer feeling than to tell her you will not fall, and then prove it.