Hey SoulfulYin,
Thanks for the update,
Just a couple of things, reading through your messages

1. Pepper is fine. It helps aid digestion. This doesn't need to be avoided.

2. I take Magnesium Threonate, however I don't recommend it for you. One its very expensive and if your mom is magnesium deficient she will readily absorb any kind of magnesium.

I would go for Magnesium Oxide. This what I started off with. There are many types of magnesium because magnesium can't be by itself as a molecule it needs to be bound to something else to make it stable.

A Mg supplement is best absorbed on an empty stomach, but if she has any side effects (unlikely) take it with a meal.

Hope this helps, keep up the good work.

Atty