DH reckons it was completely unecessary and distasteful.
Context is she's doing homework on Bonnie from Bonnie and Clyde and was stuck on her 'relevance'. So I came in with Myra Hindley as the most hated British person in the last century (with crimes that go against what women are 'supposed' to be) versus Bonnie who is glamorous and celebrated (reinvented as blonde and sassy and romantic). Both with the common aspect of being in thrall to an older criminal man.