Yes you too deserve compassion and kindness, but you said it yourself, you still would have texted her even after she expressed the need to disappear for a while... Even a checking in text is a boundary breaker, and with the type of guilt complex you describe her having, check in texts would have guilted her into replying...

So yes, her notification wasn't good enough for you, you expected more detail and reassurance that it wasn't about you, but the fact remains, had she not blocked you from texting, you would have disrespected her boundary.

If she dies come back, and you do forgive her for her failed attempt at notifying you, the blocking then probably would've played a part in maintaining your friendship.

My advice?
You're not doing yourself any favors by driving yourself absolutely batty over this situation.
There's absolutely nothing you can actually do about any of this right now, obsessing and ruminating is not helping you in any way, shape or form. So try and distract yourself as best you can, fill your time as much as possible (not with FB stalking) and don't forget to self soothe, its imperative while experiencing such levels of distress.