As a personal experiment, she could try eating high sulphur foods for a couple days and see if she develops mercury symptoms. She could then try taking Algin for several days and see of the symptoms subside.

This might at least get her started as to what the baseline issue is.

I would also recommend Cascara Sagrada for constipation. It's a natural supplement and works great.

Let me also refer you to the NSP Exchange as it is monitored by Alternative Health Practitioners who may have more suggestions.

Please keep us posted.