Girl ignores me when texting?

I chatted frequently with a girl lately (i like her) on Facebook.
She types a lot of 'hahaha' at me (i made quite a lot of jokes), and she seems to enjoy it. Yesterday i asked for her number, and she gave it to me.

Today, I asked her if she would like to play some game with me on the phone (draw something)
it went like this:
Me: *link of draw something*
Me: It would be nice if we could play it together ^.^
The ^.^ emoticon was this one:

Well that was the 'conversation'. She didn't reply, although whatsapp said that she had read it.

Whats should I do now? should i say something?
What do you think she was thinking?
I need advice please
+1 y
Anyone? Please?
Girl ignores me when texting?
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