You were the first human that fell down into the world of monsters. Only to meet a strange flower who tried to kill you. However, you were saved by a strange goat-looking woman who took you in as her own and helped you throughout the ruins.
You’ve spent the next couple of days here just getting used to the place and enjoying the motherly comfort Toriel provided. But you decided to go out into the ruins again and blow off some energy.
Once you did so, you would encounter a dummy that you seemed to always run into from time to time, just standing there doing nothing as always.
But you did notice this dummy was dummy-thicc compared to the others, and once you stepped in front of her, she looked right back at you, doing a small blink to show that it remembers you and is very much alive, with that steady patience of hers.