Calling herself a Pilot or Adventurer cannot be illegal as long as you don't seek fraudulent advantage from doing so
Agreed. Until recently, I recall her Wikipedia page listing "Occupation - pilot" which has a CPL connotation. But it appears that within the last week of so this has been changed (with a lot of impassioned discussion) to no longer list an occupation at all.
As we have seen before, erroneous information is being quietly withdrawn or softened. Not the recognition we could hope for, but something I suppose.
In any case, as TCT presents her objective as outreach, and inspiring, that is best done from a position of undoubted compliance.