Reintroducing Meat to Vegetarian Diet?

I am very curious why your friend wants to eat meat but if she does, then I'd suggest that she decide how often she wants to eat it and eat moderate portions of 4 ounces of less the first time that she does.

If your friend feels like she needs more protein, she can add good sources of vegetarian protein and see how she feels. I'd try that before I'd eat meat and fish, but everyone makes their own food choices.