Remeber though, the ambiguity of the Force is why we all love the Original Trilogy. I just assume that she learned it when she probed Ren’s mind. I also assume she was driven by the dark side, or heard Vader’s voice about giving into hatred to destroy Ren. I tried the overdub and really liked it, but it was too on the nose.
I look at it as she learned on the job. The very first force user learned the same way. If she is who I think she may be, it would make perfect sense.In short, I think saying or showing too much is not the way to go.
Just my 2¢
I would agree with this except that she uses the same type of line delivery that Obi-wan and Luke use in the OT when performing the Jedi Mind Trick™. In an ideal world she would have picked up this exact ability from Kylo and used it. However, if the dark Force vision works, it may change the feeling of the scene enough that it’s no longer an issue.
As for the Vader helmet on the base, I would be surprised if it ever made an appearance outside of this film, except perhaps as a background decoration in Kylo’s lair.