Good point - now you come to mention it I did see the bump right at the end. I also think she's got the hots for Harry too!
Is Emilia pregnant in real life.
As for Klara going on a shooting spree all I can say is that the stress of living with such a dark secret all those years had taken its toll on her mind (she had been self-harming just like the ex-au pair) and finally lost it shooting everyone in sight. The is a classic example of writers wanting to test our IQs; painting implausable scenarios; then making plot errors with all the twists and turns as they struggle to keep track of what is meant to be goinge on themselves.
In spite of her facial ugliness I still find Emilia
very attractive though.....