S5's after school provider mentioned to me today that W was picking S5 up last week and D4 was in sandals and a skirt in 20 degree weather. She kind of nicely asked what was up with that?
I don't know about the others, but this one I would take seriously. My D was headstrong too about her wardrobe choices but at 4 there is a lot you can do to make sure the options are weather appropriate. It would be worthwhile to talk to your W about it. School, daycare, and healthcare providers are mandatory reporters. If they feel that your D is being cared for in a way that could endanger her (reasonable thinking if she's wearing sandals in 20 degree weather), they will report and that is not fun to deal with (speaking from secondhand experience).
I'm sorry I haven't followed your sitch lately. But I'm wondering, based on this ONE post, what you've focused on in yourself?
Me42, H40 D12, S8, S7 A revealed: 7/13 Sep 4/14; Agreed to D 1/15