Bobby's daughter (a supernatural fanfic)

"why have we never seen her before? we stay here a lot." Dean said looking at Bobby.

" because you came during the school year and she went to a boarding school. I didn't want her to meet you yet. I train her to be a hunter but I also wanted her to to have a semi-normal life until she is 18." Bobby said looking at Sam.

" my only question is who the hell is she did you adopt her?" Sam asked looking at the stairs. Bobby fell silent.

" she is my actual daughter... she was born 18 years ago in a week."