Dont buy it!
It will be difficult to sell again, not to surehow the insurance co would react.
I just looked at a Nissan that was a cat c, written all over log book Substantially damaged.
I am told it will also be flagged up at MOT time.
DEW is right plenty of small cars about, EG I just sold a mint 1994 Astra for £470, just seen a very tidy 306 N reg £750 ono.
Better to look for a bit longer, and dont be dazzled by shiny motors that have dodgey historys, its not worth the hassle. I know it wont be any good for her street cred but the Skoda diesels are very cheap, I know of a 1998 Octavia Excellent condition £1675 12 month MOT. Fabias are even cheaper