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I thought it was more that whenever Trump said something really offensive that Javanka just happened to be out of town. Javanka like to present themselves as fair, moderate, sensible, etc. - and indeed actively covet that reputation. For example, they probably enjoyed the recent press (most likely encouraged by their people) that seemed to suggest they were influential in Bannon getting moved on. However, to get back to the point, the argument goes that they run away when the heat gets too much (e.g. Trump's comments on Charlottesville) in an attempt to protect the reputation they seek to create. And that ultimately highlights that they have little (if any) real influence.
Someone on Twitter pointed out a suspicious alignment between the dates of Trump-gaffes and the dates Ivanka and Jared have been elsewhere...