Sun, you responded to my post about sobriety being number one. Don't feel guilt for putting yours first. Anything else and you will drink.
Never have guilt for taking care of yourself. If the people around you don't see that then stand strong in your need to do it for you.
There will be thousands of reasons we should do this or that when we know that we may drink. That way of being sober is nothing more than a mine field.
Hope you stick to not going and she sees the strength you have.
K