Well, the room did smell like urine. I have a hard time imainging how that could be the case.
Many kids bedwet. RAD kids are usually sleeping with a mattress on the floor often without bedding, their choice.
We don't even know that this kis has RAD. It is very rare and commonly misdiagnosed. Plus, a lot of people diagnosed with RAD wind up with quack therapy. The dad could clear all this up very quickly with a follow up email if he wanted to.