Would you have called your friend if you did not know why they ignored your text and phone?

The reason I called her was because I had no idea there was a problem and I did not have a clue why she just cut me off all of a sudden. My friend needed space because I was being depressed and negative plus she has not told me but I think she thinks I have a problem with clonazapam. We are going to meet tonight. To make a long story short her mom died about a year ago and I went to her mom's house every weekend for almost 9 months and helped her clean house now my mom has terminal cancer she was real supportive in the beginning but a few weeks ago she just refused to respond to my text message or email or calls.

So I felt hurt and had no Idea why she did it. I was not in my right mind the other night and we went out and I got rude. I apologized but she needed space. I am ok with the fact she needed space because I was rude.

Question: Is this normal behavior? When she did not respond to me and she blocked me on FB I called her from a phone number she did not know and I confronted her. How many people would have called from a phone number your friend would not recognize just to get your friends attention Please explain why you came to your answer.