That’s great about your Mum IDI.
Sorry I mis-understood your post.
You are becoming more honest, telling one person the truth and then getting a surprisingly encouraging response is much better than telling anybody a lie for whatever means.
Your Mum will be made up for you I’m sure. She knows how hard it is to stop and probably thinks its impossible, you may just show her the way over time, and your sister! Wonders never cease.
I’m off to bed now. Two or possibly three nights off now, happy days.