Rosie O'Donnell -- Wife Michelle Rounds Claims Rosie's Using Kid as a Pawn

Rosie O'Donnell's estranged wife Michelle Rounds wants to make 2 things clear ... she says she's not the one who told TMZ about Rosie allegedly regularly indulging in wine and weed, and the second thing is that it's all going to come out in court.

Rounds -- who's gunning for full custody of 2-year-old Dakota -- was leaving a drug store in L.A. Thursday night when a photog asked her about the bitter divorce. She says she used to be intimidated by Rosie, but now she's ready for a David vs. Goliath fight.

She's also indignant about Rosie posting a pic of Dakota, asking for a vote.