Three days later you are waiting by the entrance of the bunker and you don't have to wait long because a black  Chevy Impala pulls up

"I could really do with some apple pie" Dean says as everyone gets out of the car 

"excuse me would you be Dean Winchester by any chance" you call out

"yes and how did you know about the buncker" Dean quizzes you 

"she's British" Dean's brother Sam say answering for you.

He has obviously picked up your British accent

"yes I've been sent here by a mutual friend" you say telling the last part of why your here 

"and I'm from the men of letters just so you know"

____________

two minutes later and you have followed them into the bunker 

"Hello boys" Gabriel says announcing himself 

"What are you doing here?" Dean asks thinking Gabriel is up to no good

"(Y/N) meet the Winchesters. Dean, Sam, Castiel meet (Y/N) (Y/L/N)"  he says

"wait, you're a guardian angel" Sam says puzzled 

"well yes I meet (Y/N) officially three days ago after I kindly revived her. But I knew her since she was four" he says clearing the air 

"and I need you three to protect her"

"From what?" Castiel asks 

"from a pair of demons that attacked me six months ago" you say using the word attacked instead of killed because of your subsequent revival

"And I don't want to be here as much as you don't want me here but I have to"

Dean gives you a look and Sam doesn't care and Cas is probably confused as to why you don't want to stay. 

"well boys I will leave (Y/N) in your capable hands" Gabriel says as he vanishes 

"well what should we do now?" Dean asks 

"we find the demons so I can go home and never come back" you say knowing you will be gone as soon as the demons are out of your life