If your wife has disconnected from her sister, she will eventually reconnect w/her, but as to the timeframe, no one knows. The order of disconnection during mlc will be the exact opposite of what it was when it all began. As to whether the SIL will be first or not, that all will depend upon your wife.
You were correct in stating that your wife will disconnect from those who do not agree w/what she's doing and who know her so well. She will become friends w/much younger people, people who will not judge her nor do they know her history.
Her sister will need to be patient and give her space and not take your wife's actions personally, it's just the way mlc operates and until she can find herself, she will act out and do what she needs to do to figure things out.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
