In treating women with endometriosis, my experience is that many have a shen disturbance. However, there are other factors as well, and this makes healing very difficult. Here are some suggestions: Is your client taking the herbs all month? While I have usually gotten very good feedback with Unlocking, certainly if the client was cold Cramp Bark Plus might be more effective. I would use one of these all month including menstruation. If pain during the period is intolerable, you could either add Channel Flow or western medications. I would also consider using a tonic after the first few days of her period especially if she is just spotting. Certainly if there are no heat signs and there is very heavy flow, consider Postpartum. An alternate would be Shen Gem. If heat signs, use Unlocking. Postpartum is tonifying, stops bleeding and moves qi and blood. The latter two are more tonifying however may be better for the shen.