JP wrote tweets from anger, not great for an MP, she obviously has built up an image of KB in her head and is responding in line with that
I'd agree with the anger bit - I would say she is very familiar with KB as KB does have a reputation, she has said many things that some people see as controversial, she spoke up at the Nat C conference and JP clearly watched that - so yes, when she saw KB had tweeted a picture of Tina Turner with Ike and used the caption "Good Times", you can see how that would stir up the emotions of JP who is a prominent campaigner against DV and VAWG.
That's the thing about Twitter and social media - it's easy to react quickly. It also feeds of people reacting to things they don't agree with.
However - it's clear that KBs response, her lies about screen shots, ,her misreading of Aslan - which she used in her letter to show evidence of JPs racism, her claim that she made a mistake with a GIF which has been shown to be inaccurate must raise questions.
And the follow up media round is a fascinating study into media bias.
This whole episode would make a very good case study in psychology and media bias.