Do I walk away from WAW? (1)

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Just to vent a bit: since establishing my own bank account, I have been sure to handle the vast majority of household expenses, and I've made it clear that I am happy to do so. Returning from the gym just now, W informs me that she's going to the store for a couple of things we need. "Can I use your debit card? My account is next to zero", she says, with a loaded deadpan voice. I do not take the bait, and offer to just go get what we need. No no, she says, I want to go. I know this is because she needs to buy a new box of wine, as that is the only time she ever insists on going to the store. Many months ago, before any of this began, I told her that I was uncomfortable buying her alcohol, as she had asked me to help her stop drinking. I gave her the debit card, wanting to avoid a deeper convo. Mistake probably. Not sure why I trust her to adhere to that boundary when she's broken so many others, but I'm hoping she pays for the wine with her own card. Ugh. I need to lay that one down. Hard to do in detach mode.

Finished DB. I gained a lot from it but I feel like lots of it would have been better used months before this situation melted down. I have plenty to think about should she ever indicate wanting to reconcile. Is DR more geared to the crisis I am in now?