Getting the hormones back in balance. This includes bitters, B vitamin sources, building up the flora and a diet richer in plant material for phytoestrogens and lower in meats. 

Chickweed is especially good for fibroid tumors.

If these are in the breast she should also stay away from caffeine, which has been shown to aggravate them. 

I have a write up on balancing the hormones I can send to you and you can forward it to her. Just private message me with an e-mail address I can attach the file to and I will get that off to you.