Most Helpful Girl
To get over that person completely can take some people years. My first boyfriend was an asshole, and we've been broken up since 2007 but I saw him again last year and I must say it got me thinking about the relationship we had. So to get completely over him? That could take a while. To get over him as in: she knows she can live without him and doesn't burst into tears with the thought of him, that took me a few months though. Though some women take longer or not as long.
So I suggest you give her time, but let her know that you're there for her if she wants to talk or just take her mind off things.