Thank you, that has far more info.
Here is probably what happened. Either the pregnant woman did something in traffic that could have hurt the guy on the bike, or he did something like cut in front of her or something, and words ensued.
In any case, she intentionally hit him as witnesses (related or unrelated, I don’t know) seem to back up, and a chase back to the house ensued.
This woman made a lot of bad choices. She probably didn’t go out looking for it, but...that is how it goes these days.