She is a torbie, ie tabby and tortoise-shell in one. We have at the moment parallellthreads where they explain beatiful all about tabby, tortie, torbie and even calico.
Nay, surely not Abyssinian, which are a quite rare breed. Unless you DO have proofs there was some abyssynian stud involved. Such things happens of course.
Also, she hasnt really the looks of a typical aby.