When you complete your fast, which I hope you do, your Mom will be surprised at how healthful and youthful you will look and then she will understand why you are doing what you are doing.
During my recent fast I made the mistake of telling my sister what I was doing and all she could hear was that I wasn't eating.
She cried and hounded me to eat something right up till I finished.
And now she is quite jealous of the results that I have accomplished.
Most people have it stuck in their head that you can't live without three meals a day.
That was the case with my sister, though I didn't realize it at the time when I told her what I was doing.
My mother was surprisingly fine with it, though twenty years ago when I did fasting then she wasn't, till she saw the results after the fasts.
This time she remembered that the fasting was fine from what she learned before.
I believe these people won't understand till they see the whole process through to the end and the ensuing results, which for me this time around was quite startling.