Yes stop being the father. It is demeaning to your W. She wants to be treated like a grown up. If she is anything like my W, she does not want to be thought of as handicaped. She wants to be thought of as someone just as capable of making decissions as anyone else, especially from her partner. And do you want to be her father or husband?
Believe me, she can make good decissions and it becomes a feedback loop. My W is feeling better now, not because the meds are working (she stopped taking them), but because she says she is making better decissions. She ended up making these better decissions on her own. It was not without a lot of pain and suffering on both our parts, but over that time both my W and I have come to a better understaning of ourselves, each other, and our relationship.
Your W wants to be independent. Allow her that independence, both the freedom and responsibility. She should not get one without the other. I would also suggest not being physical (i.e. hugs or kisses) until she realizes that OM must go.