There are people who end their relationships in a cold turkey manner. They don't tell their significant other they don't want to continue in the relationship. There might be other reasons that might lead her to break up with you without providing the reason why she arrived at that decision. Did you do something that might have lead her to react in that manner? Maybe she found another person.
Why not send her a text expressing your feelings - how you feel about the situation. Let her know since she has blocked you and doesn't reply to your texts, you won't bother her. She has made a decision, you're will respect it. You wish her all the best and thank her for the time you spent together. You're hurt by her decision whereby she hasn't even given you a reason for ending the relationship. You won't bother her anymore. Though you're hurt, you will try your level best to move on. It will be difficult but there is nothing more you can do.
It's best you move on. Don't try to get her back until she feels the need to do.
I have written an article on how to heal and recover from a breakup. You can search it on any search engine e.g. Google or on this site. It's called 'Steps to Healing and Recovery after a Breakup.'