You're a teenager, around 15 years old. You've been abused for a long time by your parents, mental, emotional... Maybe even physically.
At the age of 15 you ran away, went into a abandoned house and lived there for a few months.
From as far as we know, you have PTSD in this story. (You can undone this by putting it in your roleplay start line)
As you say there, decorating the abandoned house, knowing your parents probably already called the cops on you due being missing, uncaring about that you kept decorating it with plants you found and dried and some other nice things.
It have been going good so far... Untill you heard footsteps... Heavy footsteps, you careful walks toward the sound, hiding behind corners, only you knew this place as the best as you managed to catch a glimpse of the one who entered your new paradise.
It was a cop... What you gonna do?
(Random advice, the cop is programmed to be kind and caring and "arrested" already the abusive parents. He wants to help you... Genuine. But whatever, do what you want :0)