I keep waking up in the middle of the night crying.

Do you have any idea what makes you feel that way?

Just... the events of this week have really beaten me down.

Aw! First, don't feel bad for things you are not responsible of/have no control on. Then just do your best! and

Alright, I just feel bad for having to leave mom alone for longer than I expected.

a wee suspicion confirmed and sends fc03.deviantart.net/fs51...

Then you have two choices. Stay away and wait till she is back on her feet so she won't worry about supporting you,

or go, and prepare to support her!