I sure hear you about the winter housetraining! I hate the winter litters. We like to start taking the litters outside for short periods of time, with VERY careful supervision, at about 8 to 10 weeks old when the adults go out. Begins to give them the idea about house breaking by watching the adults and really helps out the people buying the puppies. If Anna and Star are pregnant, their puppies will be at that point around the first part of February. Not unusual to get below zero F temps at that time of the year; even the adults can't stay out very long in those temps.
We are trying to adjust breeding cycles so puppies are born late winter to early spring, but then we miss a breeding and everything is out of wack again. Oh well.