Have your friend do everything that makes her happier. Cocoon her and have her read or listen to music or whatever takes her mind off of her problems.
Also have her take an Epsom Salt soak in the bathtub. It's so totally non-toxic and non-invasive it's a definate. Get the Epsom Salts at the grocery store in the pharmacy section-about $3.00. Use 1 to 2 cups in a hot bath. Soak 30 min or more.
Also baking soda with water really helps with bad reactions-follow directions on the box if you'd like. I prefer about 1/2 teaspoon in a half cup of warm water. Then drink some plain water after to wash the taste out.
She may feel better with an enema but if she's not used to them it might be hard to suggest.
Hopefully others will chime in here,
Take care and check back and let us know how she is.