Hope it goes well Jeep,
Listen I found it helpful to remember that the Rehab is the start of recovery. Its were they get the chance to get off their merry go round and acquire the tools.
From here she still has to drive it herself. Al Anon suggests we show encourangement and understanding. I found offering anything more than that was counter-productive with my wife. I made the mistake of getting into long conversations about recovery, it tempted me to get involved.
Know from other stories that the anger and resentment that an alcoholic carries and deals with in early recovery can by quite hard for them and you.
Yes looking after my own girls (only 2 and one practically an adult) was tough.
Unfortunately for my wife, coming home to the nest may have the represented the removal of the prior consequences and a sign that her drinking couldn't have been that bad as she perhaps perceived she had actually lost nothing, and so could continue with it.
You sound in a good place and from what you say she sounds like a fairly comitted person. You know some people do make it to sobriety!
Mind yourself.