You all must not be watching the same video....
The defender has a step and a half (slide steps, so she wasn't going that fast) prior to contact, screener is set, defender had ample time to stop or adjust. The ball handler set the defender up properly, the screener was set prior to contact, and contact wasn't initiated by the screener. It was close enough that I would have no called the play, but the screener was fine, IMO.