She needs to know where her son is.
IMOO she wants to know everything, what did he eat, what did he watch on tv, did he brush his teeth, did you have a fight, was he mad, was he happy, was he sad. IMO it's not about questions that Mark may have told LE, they aren't the parent! MR & ER are the parents and MR can answer all those little trivial and parent important questions since he (even in his own words) saw him as late as 730 am on Monday morning.
IMO, it's not about MR, he even said this, it's about finding Dylan. So, IMO, speak with your ex, speak with you sons, put the differences aside, pull up your big boy pants and act like a man. When it's all over, go back to hating, disliking, whatever it is you want to do. IMO MR is making it about him because he won't speak with the most involved people, his ex, the mother of his child.
I'll tell you this much, if MY son was missing and MR had questions of me, I'd answer them.