Don't u think that doing enemas couldn't be a coin of two sides? Yes it could help to flash out of toxins of candida but at the same time (and even if u go for not friequent ones) it disbalances Flora of colon?? If I was u or that person with candida issue, I whould double think this option.
Also may be (just a thought) it would be better to clean his/her bowel by using one of the colon fiber based colon program (but I would ask their doctor first, whether it could be beneficial and not harmful)? Like this one -