Oh BL, can i just say that you are obviously doing an amazing job with the kids. When mine are at home with me s7 doesnt really ask about H, doesnt cry, every now and again s6 will say he misses H and how it was before he left. And i can totally sympathise with kids not liking the OM.
Same here with not liking ow and wanting her gone from S7, he literally says that he is waiting for her to go and live with her parents, back where she came from basically.

No judgement here either, i also think that healthy detachment doesnt mean treating the ex as a stranger. I will always have some interest in his life all the while the kids go to his home.