Let me guess? A 99 mg potassium pill?
She needs more potassium.
Taking one potassium pill before bed won’t cut it. Especially if she is active during the day.
I’m telling you this because I have been in her exact situation.
If she is getting horrific leg cramps at night, its her body saying “hey, I really need MORE potassium.” Not just SOME potassium.
She can suck on salt all day long and still get leg cramps… if her potassium is low, and it is, she needs more.