If it transpires that Greig was forced under threat of dismissal to carry out the stunt by her employers then I will happily retract my statement. As it stands, she is simply trying to divert the blame for her own poor decisions onto her employers and make cash in the process. In the normal scheme of things that would be poor - in this situation, that led to the death of a woman, it is disgraceful.
It's unclear exactly why she is bringing this action. There are suggestions that she remains in a sort of employment limbo whilst her co-presenter is back at work. If she is suffering from contractual issues with the station in regards to this, then she is right to take action, as anybody would be. The death of the woman in the UK is irrelevant to it.