Angel, great on the self-control! So happy you had a great time with your daughters. Can you take advantage of W's offer of weektime with them?
Your child is trying to tell you to help her. She was saying that she doesn't want her mother to hit her. Talk to your L and discuss reporting it to child protective services. As a parent, you are actually obliged to report abuse to them. Your L should know how effective the local CPS are.
Her keeping them from you for 4 months and then her accusations followed by offers also demonstrate that she does not have their best interest in mind. She knows perfectly well that you are no threat to them.
JellyB, Angel has posted before about how his W has abused the children while they were married.
If that is the case Painter, then Angel follow Painters advice. If I had been aware of the history I would have said the same.
