Dear Ruby2343~
It is a real shock to find a mum has an illness and depression does seem very threatening.
I guess the first thing to say is that having depression and being on medication can be a bit like many other illnesses, diabetes for example. If you take you meds and follow the guidelines a pretty normal safe life can be lived. So there is no need to think of it as anything worse than that.
Like anyone with a condition if things get worse you seek more help, and if necessary stop what you are doing if it is the cause and retreat back to safer ground.
Most people, depressed or not, have times when they get angry and argue, it's just normal. One of the things about those we love is they can be the easiest to fight with - because we know we are safe doing that, they will forgive and still love.
Your mum's hard life as a single parent would I imagine have come to an end. Moving to Kenya seems to imply she in in a new phase of her life. Is she going over there to work?
Having a parent as a best friend is a wonderful thing and you are pretty lucky. The thing is though that friendship goes both ways, you will be a best friend to her too - parenthood does not stop that from happening. So she too is lucky too and will know in hard times she can look to you - along with others and medical support.
The shock you are feeling right now will pass, and while you will recognize your mum's illness does need to be borne in mind it is something an awful lot of people - me included- live with very successfully.
Separation of course means it is going to be harder to talk, but nowadays that is less of a problem.
Now you have mentioned your mum and yourself. Are there any others in the family too, or failing that any close friends you can talk things over with, who will care and want to support? Come to that have you discussed all this with your mum? She probably would have a few things to say as well.
Please let us know how you are getting on
Croix
