Undertail

Why has this happened?

 ( San's pov )

The kiddo got up, went to the spare bedroom, and shut the door." I doubt she trusts me after that " I say. Around noon Alphys arrives to check the kiddos health and their LV. Me and Alphys go to the room she's in and tries to open the door, but it's locked. I knock on the door " open the door kiddo " I say, but no response. " common open the door kiddo! " and as i say that the door opens slightly to reveal a silver fox eye looking out of the slight crack in the door. " hey kiddo a doctor's here to make sure your ok " I say. " leave little skeleton and i'll let him/her in." she says. " ok " I say and left going down stairs.

 ( Yin's pov )

" ok " says the little skeleton. He leaves going down stairs and I open the door to let the doctor in. I sit down on the bed wrapped in covers. The doctor enters the room and she's a... a... a girl?!

 ( doctor's pov )

" Hey im Alphys, Sans called and asked me to check on you. He didn't tell me why though " I said. " Sans? " I hear her say quietly. " Ya.....Sans thats the short skeletons name. " I say. " Hey if you want me to take a look at you and make sure your ok, your gonna have to take the covers off." She says " No i'm fine...... thanks for your concern though. " I hear her say quietly.

  ( Yin's pov )

" Alphys can i ask you for something? " I say. " Ya sure what is it? " Alphys says. " i need some new clothes cause........ " i say my words getting caught in my throat. " cause what? " Alphys says. " Cause there all too small and don't fit anymore. " I say blushing like crazy, but she doesn't see the blush because the covers. " ya i can get you some new clothes but i will need your measurements to get a correct fit for you. " Alphys says. " can i just message them to you Alphys. " I say. We exchange phone numbers " yes that should be fine..... Umm what is your name? " Alphys says. " Its Yin..... Yin K. Lin " I say. " Alphys says " that's a cute name yin just message me the measurements between now and 6:00 ok Yin." " Ya ok " I said. Alphys leaves the house. " I need to find Sans" I go up stairs and see the first room says papyrus i go to the next one it says Sans so I knock on the door and hear a " Ya give me a sec " then door opens and he says " So you all done Alphys........ Oh kiddo what do ya need? " " Hey Sans can you help me get my measurements for some clothes Alphys is going to get me. "