German shepherd border collie mix (Saxton)

She is german shepherds border collie she is potty trained and crate trained she is a very good dog she is food aggressive with dogs not humans she's about a year and a half old she was my nieces and she went to live somewhere else and just left her here I have 3 dogs of my own and a 4th is just to much I have tried to keep her but I can't she does really well with other dogs has never had an accident eager to learn she is weary of men and it takes a lil time for her to warm up she deserves all the love she can get I would have loved to keep her and it's sad that I have to do this I really have gotten very attached she has a she does need her shots though there is a rehoming of 100 I really want a great home for her her name is Gracey she does ok off leash but I wouldn't trust it at first she is very intelligent please text me I do answer emails as well but texting is preferred