noun
lassie
LAS-ee/lˈæsi/
A girl or young woman, especially in Scottish speech.
The young lassie stands beside the stone wall wearing a tartan scarf.

Etymology
Lassie adds a diminutive ending to lass, presenting the girl as small or young. This formation underlies its use for a girl or young woman.
In context
i said where did you sleep last night hey lassie oh there on that stair and she pointed to a door