Originally Posted by DJ
If she just said "we" could start tracing it, she may have just meant she'd help you. She may not have been assuming she'd get a copy. When you're done with the pattern, I would think you could loan it to her (the original pattern) without infringing on the copyright.
I agree she's a friend, if you read a good book, would you hesitate to pass it on to a friend. No one needs stress and strain with a friend.