[yorkie mad]

oh gosh im in a right dilema again! As some of you know ive been looking for a playmate for Tia well.... I saw this advert of a 6mth old yorkie girl which looked a lot like Tia, so I e- mailed the woman / man and they said they wanted her rehomed as her other yorkie keeps bullying it. Fair enough it happens, but on enquiring further it turns out she has only had her for a month and moved recently and can't find her shot record. Anyhow that raised a red flag to me being a suspicious person lol and I wrote and asked to give me the vets name and number and I would like to check for myself , with that she came back with shes had an owner before me and they had got them done and can't be contacted.
I really don't know what to do . She/ he is a 3hr drive away and Im not sure its a good idea to take a baby with no medical card.She / he is asking £350 for her with no pedigree papers ( which im not that worried about) and no medical card. My concern is a. she could be stolen
b. if she hasn't had shots , she could be in trouble.
Im not sure wether to get her.
My question is would you?