In general, the multiple responsibilities of adults can overwhelm us, work, husband or wife, children, home, pets, and even the car demand time and dedication, and if we add studies everything gets even more complicated. A recommendation that can be given to Carlita, is to prioritize, plan and manage, it has worked for me, prioritize the 3 or 4 things that she has to attend first, in her case, the first one would be to find someone to help you with the children, there solves the biggest of her concerns, then coordinate the work schedule with the study so big loads are in the same days, and she can have other days off to take care of her home, family and have a little rest.