If she has really exceptional bloodlines and qualities that you want in your herd and you can't get those anywhere else- and the price is low enough to justify the risk- I would do it. Maybe.
But otherwise, I wouldn't take the chance unless you don't mind absorbing the loss if you can't get her bred.
Then again- aren't we taking a risk every time we buy a rabbit? None of them come with any guarantees of making it through quarantine, let alone breeding successfully... so go with your gut.
Personally- I buy bucks. You can put a buck to so many more does in a short period of time to see if they cross well with your lines, and even if they should die for some unexpected reason in a month or two you already have multiple litters on the ground from them.