S2 Finale Spoiler
Lorna calling the cops is big issue. According to what I found.. "The attorney-client privilege and the corresponding ethical obligations of client confidentiality extend to the paralegal and all non-lawyers working on the case."
This may be different in different US states or countries but seems to hold true in a lot of places too. It could also be argued it was based on information learned after the case ended so Lorna was no longer bound but not sure about that.