How to switch back to normal sleeping hours?

When my friend changed from day shift to night shift she changed very easily, no problems at all, she said it was as if she lived in the other hemisphere and had those hours normally all her life. That was 5 months ago. Two weeks ago she was thinking of changing back to day shift. But they said they were out of day shift jobs so she quit the job wanting something else. Anyway she's having a lot of problems getting back to normal. Now I haven't seen her (we don't live close, she's like 1200miles/1900km away but in the same time zone. She's far north, I'm far south. I know her personally, she moved to the north years ago.) but this is what she says. She wakes up at noon or a bit later and spends the rest of the day, and at night when she wants to sleep at 10 she can't, keeps getting restless and watches movies and episodes of tv series both on her dvds and online on similar websites like youtube, listens to music, browses the internet, paces around her flat, reads, and so on. Whenever she tries sleeping again she can't. She stays awake in bed and gets restless again. Anyway she finally sleeps at like 5 or 6 am. Then won't get up until noon or as late as 2 pm. It's the same schedule she had when she had the night shift. She doesn't really have any other friends she can ask, she's pretty much only has me and some random acquaintancess she doesn't really talk to. And the other other person she asked told her to take a sleeping pill.. She also isn't really in touch with family, she fell out with them-that's one reason she moved years ago because of their nagging and treating her like a baby. So really I'm the only one she really talks to. Anyway I told her to stop browsing the internet and watching stuff and to just listen to soft and calm instrumental music (not loud or loud/soft stuff she's been listening to like symphonies/concertos or her pop/rock songs) or mediation music and well, she says she hates that stuff and that it gets her nerves. I'm not sure what else to suggest. What can you suggest?