At the end of the day do not feel guilty about putting your kids first. I know many animals will actually eat snow as a way to stay hydrated if they are desperate enough. Not a perfect solution but its better than nothing. So if there is snow on the ground they can get some themselves.
As far as everything freezing that is the biggest pain to winter up in the north. I've done all the tricks and honestly most a very temporary fixes that still result in the same frozen water. Best bet is a bucket and go out to break up the ice every couple hours. It takes a while for a good layer of ice to get on there so if you go out every hour or two that'll help you through the day. If you have a plastic bucket beware, do not hit the ice hard or your bucket will crack.
Onto a little more of a touchy subject and I may get some flack over this but if it really is coming down to providing water for your children or your chickens the choice is an easy one. If it really gets to that point it may be a good idea to just put the chickens down, you most certainly don't want them to die of thirst suffering but at the same time you have to do what's best for your family. If it came down to providing necessities for my children to survive or my chickens I wouldn't hesitate. I'm also not sure about your food situation but that could also help in that sense too.
As far as everything freezing that is the biggest pain to winter up in the north. I've done all the tricks and honestly most a very temporary fixes that still result in the same frozen water. Best bet is a bucket and go out to break up the ice every couple hours. It takes a while for a good layer of ice to get on there so if you go out every hour or two that'll help you through the day. If you have a plastic bucket beware, do not hit the ice hard or your bucket will crack.
Onto a little more of a touchy subject and I may get some flack over this but if it really is coming down to providing water for your children or your chickens the choice is an easy one. If it really gets to that point it may be a good idea to just put the chickens down, you most certainly don't want them to die of thirst suffering but at the same time you have to do what's best for your family. If it came down to providing necessities for my children to survive or my chickens I wouldn't hesitate. I'm also not sure about your food situation but that could also help in that sense too.