After watching an interview with her, it is clear what she is all about.  As you documented, she is a fervent Democrat on the left of that party, adept at glib sound bites but inept at actually getting things done, presides over the largest municipal bankruptcy in US history occasioned by mismanagement and being unable to any longer cover the excessive benefits of municipal retirees, and is increasingly under attack for  patronage, partisanship, incompetence, parsimony with the truth and unbridled political ambition.

Naturally, a politically ambitious mayor wants to avoid criticism in the handling of this terrible disaster by passing the buck and blame to leaders higher up the food chain.  Trump is the obvious target because PR is a left wing Democratic basket case dependent on perpetual handouts from the mainland so the GOP and especially this GOP president are already unpopular there and thus easy marks in the blame game.  

Total bunk but red meat for Trump haters everywhere.