I believe you have to be signed on to do this but on the page where you see all the contacts there is 'File' at the top, click it and it will bring a drop-down menu, and at the bottom there is 'View message history' unless Gemma has been fiddling with the options you can check to see who she has been talking to and what has been said. But it isn't at the current time of the conversation, only afterwards.
To see if the option has been disabled, open a conversation with someone (not saying anything) and click on 'Tools' at the top, then options, and it will open a window and click on Messages and there is a tick box for 'Automatically keep a history of my conversations' so you can see. You can also choose to save the history in a selected document.
Bear in mind you have to be signed onto her account to do that.
Hope that helps.
