I have to agree with Moxie. Six weeks seems awful young especially considering she has no teeth. It seems strange that a reputable breeder would hand over a puppy that young with no teeth. I belong to a dog forum and if you're still concerned about her teeth, with your permission I will ask about them...or lack thereof. I guarantee there will be lots of responses that may be helpful.
Stella - sweet, timid, elegant, lovely, lively, amazing
Luna - large, unattractive, naughty, adored