Lora trained on 28 images of women wearing black balaclava masks, AKA ski masks.
Best results seem to be on a strength of (0.7) to (0.8) - Trigger with a phrase such as "woman wearing a balaclava ski mask" or sometimes simply "black balaclava mask".
There is some limited training with hair peeking through the bottom of masks, and a few images of masks with pigtails. Use the word "pigtails" to appear, but the effectiveness varies greatly depending on model and prompts.
Link to the male version: https://civitai.com/models/183765/balaclava-ski-mask-bandit-hat