You are doing great! MC is unsettling...you are going there for change. You did a great job of HOY under your wife's attacks ( very clever her use of the enneagram). Here on the BB we all can see her defensiveness, hurling the therapist's tool ( the enneagram) right back at you. She's angry and she's scared. Continue to reassure her that the purpose of the MC is to create a better marriage...it's ok to soothe her abandonment issues a bit.
What does it say that 1's do under stress? Just curious.