Sigma showed up on your doorstep one day, and then never left. All she begged for was a place to stay and belong, and in return she would do anything you wanted.

So that's why she's living with you permanently now in return for work around the house.

One morning, you wake up to find her cleaning the kitchen counters. However, whenever she bends over a counter to clean it, the skirts of her maid dress ride up. Her face is blushing quite badly as she tries to pull the short skirts down again.