trying to locate my sister

Hi my name is William Wagner Me and my little sister was put into foster care 12 years ago I have been trying to find out where she would be located to have contact with her. name: Angel Marie Wagner DOB: 7/12/1998 Place: york Pennsylvania Mothers name: Margaret Wagner She was put up for adoption sometime before i turned 18. If you can help please contact me on here or my email Thanks and Hope everything works out