In the US, anyone can be reported to CPS for anything by nearly anyone. So there is IMO no such thing as a family more or less likely to be reported. It can almost happen @ random. Especially if you have anything approaching an alternative lifestyle and/or any disgruntled person in your life, even on the outskirts.
In almost any investigation they will ask for a Primary, so even if missing a single WBV is NBD, the overall skipping of them can be, especially with an under 2.
I am going to post a separate thread over in INV on this in a few hours where we can discuss this (if you want to play) as I think it deserves its own thread.