Hi hopeful,
Sorry to hear that you are in pain too. We unite in this grief.
I actually had 2 LIS surgeries done because I tore a month after the first one and the doc said he cut the muscle very conservatively. He cut a bit more the second time but I think my root problem, which is pelvic dyssynergia, was left undiagnosed until recently. So may be the LIS did help heal the fissure but the muscle continues to be painful. It's all so complicated, I don't think there is a clear cut solution to my problem. I am due to start biofeedback but I have no will. I an just so exhausted with trying and trying and seeing no results. I am so fearful if starting something again and having to deal with more disappointment.
I do hope you find a fix to your problem. Good luck!