Sam,
I am really sorry to hear you are still experiencing so much emotional turmoil. Perhaps now is the time to try to calm your mind with Meditative Practices. Here:
http://www.how-to-meditate.org/breat...ditations.htm/
Is my teacher's (Geshe Kelsang Gyatso) Breathing Meditation instruction page. It is a Secular practice, suitable for everyone, not just Buddhists.
The aim is to empty and calm your mind by simply concentrating on the sensation of the breath entering and leaving your body. While it is simple to start it takes practice, but the results can be very powerful.
It would also be a constructive exercise for you to practice when you are in your room. Just make sure you turn off all distractions.
If you try it for 10-15 minutes a few times a day for a few days you may calm down enough to be able to talk to your Mum.
Dave.