This is true; but, I would like to point out something. Apparently there was a custody agreement in place. Even if DY did notice red flags she may not have been legally able to do anything about it. Can you imagine how frustrating something like that could be?
Truth is, we do not know if they had an ugly custody battle. Seeing that DY obtained a RO I imagine it was ugly. We don't know if DY was trying to make changes in that custody agreement recently either.
It really urks me when people question why DY did not step in and try to keep Kyron. We don't know if she did or didn't. It is very likely that her hands were tied by the courts ... anyone that has been through an ugly custody situation will better understand this.
With that said, I have no doubt that Kaine loved his son. I'm sure he was a very good and loving father; so, please don't think I am in any way putting him down. When it comes to our children, I am sure we can all be difficult to deal with.