excuses for not showing up to a job?

So a few months ago I got accepted at a nursing home for a CNA position and I really wanted it. I was dealing with domestic violence at the time, and the time of my drug test and orientation scheduling is when shit really went down. I was going through a lot and I missed it. I never called or anything because of the amount of stress I was going through. So now I’m in a better position and I reapplied they did call me a few days ago, but I didn’t see the call and I’m honestly thinking about what I’m even supposed to say to them because I don’t want to tell them about my domestic violence issues at the time, it wasn’t meant to be. I had to get my mental health and my kids situated in a new place as well. Everything came crashing down on me at once. I just don’t know what to say to them when I call them back tomorrow because I know they’re going to ask me why I didn’t show up the first time….