How do.I know if a girl on facebook blocked me?

[v]

Please read all.Ok, so I sent this girl a friend request, She accepted, liked a pic of me, said hi to me first and we had a conversation, then now she's not on my friends list, but I can still see her when I search on facebook, but cant see her profile. My friend said he can't find her either and saids it deactivated, and when I send her a message it says this" Invalid Recipients One or more of your recipients are not valid. Please try again.". Did she block me?
So.it's just weird that when I type her name I can see her, but when I press on it it just takes me to my timeline, and you don't think she deactivated her account over me, she was really enjoying the conversation I could see thats then I said how's life going with her then she typed back ...hmuu?, bit you don't think she would deactivate her account because of me?

[Will Robinson]

If she blocked you then you wouldn't be able to see anything at all linked to her. She's simply deactivated her account (i.e. Closed it down) so she won't be available at all until she re-activates it.

[HijackYou]

Yes, she deactivated her Facebook account. The proof is your friend is also unable to find her.

If she had blocked you, you wouldn't be able to see her on Facebook search. Only the deactivated account are shown up in search, that you can't see their profile until they reactivate. For now she doesn't exist on Facebook. Unavailable!

[Jake]

She didnt block you, just deactivated her account.