(((((ladymacabethadmunsen)))))
you sound fed up, exhausted, frustrated... You have obviously gone through a tremdous amount of turmoil in the past 3 years, yet here you are now, a strong woman who HAS survived it all. Just keep looking at how far you have come, how much you have achieved, and take note of all your strengths too. Trying to look after a house on your own while emotionally spent, working AND studying is no small feat. If you try and do 1 bit of housework every day (eg vacuum the floors one day; clean the toilet the next, dust on another day) you know that everything is getting done weekly, and in doses that you can manage.
I hope that things get easier for you, and you are able to get a break as you so deserve. Take care.