Well, as someone else said, I hope she's not letting you take her at 7 weeks

which works out in your favor in more way than one! Why don't you ask her if you can wait a few weeks, and then decided? That way they can grow into their looks.
If not, if her contract states "money back", get back your money and look for another breeder. If she won't give money back, choose a pup...you'll fall in love with her, I promise! They're easy to fall for!
PS. I'm an idiot and forgot to say, SO sorry for your loss.