She blocked and unblocked me all of a sudden. She even cut me off on WhatsApp. Shall I block her?

So, there’s a girl that I had a crush on. I didn’t push for a relationship. We were at peace. I think it’s been 6/7 months that I haven’t text her, neither she did. But now, all of a sudden she removed me completely from her life. I mean, it’s okay, but why did she do all of a sudden? This questions is what bothering me.