Also, if the husband was scamming her successfully all along, he would have said, "Don't worry honey, I'll take care of the campus housing arragements," and that would have been that. He certainly wouldn't have told her to start calling the college for any reason!
She was calling around because she was suspicious. And she got proof her suspicions were justified.
I can't imagine the horror of finding that out the very day after getting back a positive pregnancy test.
Yep. She would have been better off going to his parents and asking them how best to approach this with her husband. (That way she could get their input, and show that she didn't want to belittle him. She just might be alive if she had somehow involved his family.)