When you get in to see Kelly, you'll see a blue notebook on the desk at the right, but Kelly won't let you take it, and Rosa won't even open it. Fooey.
Hint 2
What we need here is a way to distract Kelly long enough to grab that notebook. Kelly is keeping an eye on you --
Hint 3
-- but she can't see Joey, of course. Maybe he could do something? He does have some ghostly powers, you know.
Now you just need a way to talk to Joey while you're both here in the room. Kelly would think you were crazy if you just start talking to someone she can't see --
Hint 5
-- but unless you work somewhere like Bellevue, the last time you saw someone walking around talking to thin air, they were probably using a phone you just didn't see.
Hint 6
Maybe we can use the same idea here ... but not with Rosa's cell phone. Pick up the landline phone on JoAnn's desk, then click it on Joey.
Hint 7
Pick the topic, "Request a performance," and Joey will blow on the papers on Kelly's desk. (If you don't see that topic, you need to go back to your apartment and ask Joey about his ghostly powers.)
Hint 8
Quick, while Kelly is bending down to get her papers, grab the notebook and leave. You may need to try this a couple of times if you're not fast enough.
Hint 9
Out in the hall, right-click on the notebook in inventory, then look at the two pages Rosa extracts from it. The first page will give you the first name of Susan's boyfriend.