The clearest view of Klara that I've got is that she's pretty much Molly's partner in crime and goes along with whatever she wants/does, so I thought it made sense in the context too. She seems too nervy to have a clear idea of what she wants and from the characterisation of I've got of her so far she seems the type who goes along with more dominant personalities. In this case, she could do a lot worse than having a role model like Molly.