She'll be left alone for a while. Then one day they'll look through their records and realize "Oh, crap! We forgot about her. Better make a token visit before the CO get on to us..." They'll make their token visit, and depending on how she handles it, things can go a few different ways from there.
Most elders are way too busy be concerned with shepherding calls. Every elder I've ever talked to has told me they don't do this enough because of all the other things they have to do. When I was a MS and worked closely with them, I understood how busy they were. It's not that they don't care. I could tell most of them did, with a few exceptions. There are some that are in it just for the title. These are the ones that get all the stories that we read on here. But from my experience, the majority are just like all of us were before we left, beaten down and dragged out with no upside in sight.
I have been to all of two meetings this year. Two years ago I was a spiritual asset in the congregation, giving Public talks, fill-ins, and any responsibility that was asked of me. Fast-forward to now where I'm doing absolutely nothing, except a token hour of field service (informally) and an occasional meeting when my wife insists we go. I think I've fallen quite a ways, but after the initial effort to "pull me out of the fire" last year with a few back-room encouragements and one in-depth conversation with a local elder on why I can't believe in the teaching of this generation, they haven't shown any outward display of caring. No calls, no visits, nothing. It's been great sleeping in on Sundays and not having to get ready for the mid-week meeting after work though. And my wife has been missing just as much as me. It's funny how she's always sick the night of our midweek meeting. They make me sick too, lol. And when we wake up on Sunday's after the meeting has started, we just go on our way and find something to do, or just relax. It's nice.
So tell your friend to enjoy not being bothered. They'll come around one day. But until then, don't worry. They have no power over her.