Several of the tumors are hard like rocks and they are bothering her mobility on stairs and her comfort when lying down. I wondered about the use of sheep sorrel. I read that the leaves are used. All I was able to get was dried sheep sorrel from the bulk section of a health food store- it looked woody- as though leaves weren't the main component. Are the woody stocks/stems of sheep sorrel also used and considered as usable as the leaves? What would be the best method to extract it's potency. Ground up and given raw( as companies market it in capsule form) or to make a tincture or tea from it. Can anyone tell me the difference in potency between a tincture and an extract and how to go about making an extract from dried herbs?(I already know how to make a tincture but not how to make an extract or even if it's possible to do so)