You're probably NOT going to want to hear this, but therapy during MLC does NO good, and each of you have the answers within you on that.
Until the fog is cleared within their heads, and they are READY to work on themselves, no amount of counseling, paid or otherwise is going to work; they are TOO deep within their crisis for the counseling to do any good in getting them to work on themselves.
For some LBS, MC has been a good thing in that the counselor has challenged the MLC'er on what they feel, and this third party CAN bring an area of "truth telling" into the picture, making the MLC'er do some serious thinking, but that works, again, IF the MLC'er is ready to do any thinking about their situation.
Otherwise, they may agree or disagree at one time, and completely forget what they say the next time.
Now, remember, this is my humble opinion on the matter; my husband absolutely REFUSED to go to MC; said he didn't have a problem, and I remember him saying that to me. His problem was ME, according to him, but then, just because he said it didn't make it the Gospel truth, and somewhere down the line, I learned that much.