Cavey
Couple more questions...
Is her laptop wireless switched off when she is wired? If not make sure it is.
Also, when does this happen? Is there a pattern? For example does it only happen when she is gaming, or doing certain things?
I very much doubt it will be a graphics card issue.
Yes, I switch off wireless when I'm wired.
The only pattern I really notice is that my ping will be okay until I go in game. As soon as I connect to the server, my ping goes up. In the past, I could play with a higher than normal ping but I can't play with the jittery lag that I have now. I also notice that Bama's ping will spike if I am web browsing while he's in game.