why do you have to tell her anything? she's your daughter, not your confidante, and your relationship with her mother, while it certainly affects her, is absolutely none of her business.
If she asks, tell her that you love her, her mother loves her, but your relationship with each other is something the two of you (you and w) need to figure out on your own.
adding this look up parentifying look up parental alienation
those are your hard limits
boundaries aren't porous when it comes to your relationships in this instance
you have a relationship with your daughter: you and daughter. closed loop
her mother has a relationship with her as well: mother and daughter, closed loop
you and w: closed loop..
M 20+ T25+ S ~15.5 (BD) BD 4/6/15 D 12/23/16
"Someone I loved once gave me A box full of darkness. It took me years to understand, That this too, was a gift." ~ Mary Oliver