I'd look at it this way, if my partner was serious about recovery and told me straight out that something I am doing would compromise that recovery, I'd stop.
If he relapsed, he could die. If I stopped what it was I was doing, I may be inconvenienced at best.
Sounds more like you are seeing this as a power struggle but I would see it more as a health issue for her. Having it around is troublesome for her recovery and she stated it clearly. The good part is that she is able to articulate this so that tells you she wants to be successful.
Supporting her to stay healthy and productive should be more of a priority I think.