Enjoyed you observation about removing a female and see the coyote activity cease for quite some time. I also hunt in your region and have seen the very same thing again and again after I remove a specific female.Sometimtes it takes years to recover a breeding pair in that local. Probably because we just don't have the coyote density of other parts of the country.
As far as an adult picking up a new mate, probably for breeding if a female needs one. A male may have to depend on availability of travel,but all that would be hard to know for sure.