Sorry to report this. But I called NVC and finally got hold of someone who was willing to talk.
The agent indicated that there is an "exceptional" backlog at Cairo embassy; he couldn't tell me how bad this backlog is, all he said that there is a backlog and it may take some time to get an interview because of the embassy closure over the past 3 years.
I was hoping she would travel this summer. We are planning on changing our plans.