I'm going to take literally what you said in your first sentence "I have a good friend..."
You are asking for advice because you want to keep her as your good friend, and you want to be a good friend to her.
However, you are caught in a sticky corner. There is an honorable way out of this. Is your friend worth $12?
Simply buy a second pattern, wrap in in giftwrap and present it to her as as gift. Later, after she has begun to use it and is happy with the pattern, happy with you as a friend, only then in different circumstances, are you on solid ground to give her your thoughts about copyright. Having a good friend to quilt and shop with is worth hundreds of times more than $12. The true meaning of the word "wisdom" is living through love.