Should I block my friend?

[Dave]

Me and my friend (female) are very close, however over the past year our friendship has taken a little down hill slide due to many factors within in both of our lives (nothing we have done to each other) and this is why we haven’t been as close as previous years. Anyway she sent me an invite to her birthday on facebook but didn’t send me the address! I sent her several texts and calls but she never contacted me back. Yet everybody else she invited I presumed went. Fast forward a couple of days and I called her for her actual birthday and wished her happy birthday on facebook and still no reply (liked everyone else congrats except mine). I sent her a detailed message on facebook asking her to please contact me and expressed my feelings to her as a friend and told her I cant fix the problem If I don’t know what I have done and said it will take two of us to make amends. I told her how important she was to me and how many good times we have had together, I also mentioned that at times I thought we would make a good couple (I didn’t confess any love and never have). I was very hostile and didn’t say anything bad about her or the situation. She replied and said I will get back to you soon with a detailed reply… Fast-forward two weeks and I still have no reply! So I sent her another detailed message asking her why she cant contact me and asked her to block me If she didnt want to be friends, she didnt reply again! Why hasnt she blocked me if she doesnt want to contact me?

So should I block her and delete her number?