Actually, Wada is very close with the Johnny's boys. I am pretty sure her and Tomoya know each other well and she might even know Ayumi well because I have seem them on television shows together and they seem to get along. Wada is a very wise woman and she comments on everything. She says what she thinks and what others are afraid to say, so I say go Wada. You all take things way too seriously to react like that.
For all you know, Wada could be right and you could be wrong. Like said above, nobody knows what actually happened.