Good morning, Frank!
I think you absolutely did the right thing, and 24 days sober is fantastic news!!!!
It is early days in a life-long lifestyle change, though. I hope you will continue to concentrate on your sobriety and recovery and life!
What will be, will be when it comes to your girlfriend. You know you did the right thing for your health and maybe your very life. I hope that you will not jeopardize that now by going back to the same old pattern of behaviors. Her mother may or may not be badmouthing you.....but as another SR moderator says "What other people think of me is none of my business".
Sending you strength and good wishes for your continued recovery~!