Hmm... I've had the SS problem happen to me once (tho it was resolved when I logged off and restarted EQ).
Does she have this problem (as per the first screenshot) in every zone? Or just QH? If it's just specific zones, then perhaps by deleting the pak files for them and letting the patcher re-download them will fix it.
Has she tried installing older / newer video drivers? Re-installing the same video drivers might not fix anything (assuming it's a driver issue).
If this problem has been persistent however, then I would be inclined to believe it's a bad card...