Oh Bree,
Hon, I am sooo sorry about your Mom. It was the hardest thing I have ever had to go through when I lost my Mom.
Please don't feel guilty. I know your Mom wouldn't want you to feel this way.
You did all you could at the time. You have to convince yourself of that. Feeling guilty and upset over it, isn't going to bring her back. You need to take care of you now.
My own Mom ask the doctor in December, if she would be alive the next Easter and he told her no. She then ask him how much time she had left and he told her not long. She was gone a month later. I was right there when he told her that. I felt guilty for a long time for letting the doc tell her that. But, she was the kind that wanted to know.
I hope you can find peace in all this. I know your Mom would want the best for you.
Take care and let us know how you are doing,
Linda