Melania Trump — like all the first ladies — spent a great deal of time doing charity work for kids and so on. Most of the time, nobody paid any attention to her clothes. One time, she wears a jacket, and explains why she's wearing it: "to show the media I don't care what they think.". This day, just like the many other days, she is also doing some charity work (she didn't even wear it while with the kids, by the way). So use Occam's razor yourself: is she doing it to send a secret message that shat she doesn't care about the kids? What on Earth would be her motivation for doing that? To help win votes from people that hate children? If she hates kids, why would she bother getting on a plane in the first place? Or, is it more likely she's doing it for the reasons she literally said? Does she really hate kids? Or, does the media hate her? What's more likely? Use Occam's razor or Hanlon's razor.
Why on Earth are you quoting it being a $39 jacket? Why is that relevant? Your overly outraged, negative interpretation is just proving my point about how people are getting outraged over fashion for no good reason.