BB, One of the difficult things to learn with Piecing when there is an EA is to learn to tolerate its presence during the reconciliation process. Demanding that she cease and desist the EA will likely be met with resistance.
She will need to separate from the other person, at some point if there is to be intimacy and in your M, but for now you're working on connection and communication. You will have to accept the level of connection she is willing to give.
Piecing requires courage, patience, and openness. If you stay with the situation, you will be stretched further than you have ever been in your life.
Resist the temptation to control your W. One of the lessons in Piecing is that we ultimately don't have control over the outcome of our M, though we do have influence.
CL
CL 53 W 54 M 20 yrs. 03'-09' Separation + Old Patterns + GAL 10-14' Piecing
"The Master allows things to happen. She shapes events as they come."