So if I'm to get this correct, when she uses a wire at home it works but not wirelessly, and when she tries it at work wirelessly it works. Correct?
No. Wireless at home and in office no problem.
Works on wire in office but not at home and not in IT man's apartment upstairs. Wire and router are OK - my laptop works fine on her wire and she has now resurrected my ancient Dell Inspiron and is using it on that same wire through the same router. Weird eh?