Some people need time apart to think things out. I think marriage isn't a game, I think that you have to work things out as a couple.
She said that she wanted time to think and maybe a divorce? I think right there you should know she's probably wanting to move on!
Only you can decide what to do, but chances are that she isn't happy with you, with the relationship, or there might be someone else she's interested in...

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My Ex-husband SKULL-BUITRE ran off to Colombia with OUR money and screwed me after I helped him build OUR business.
He is hiding in Colombia and never paid the settlement $ from our divorce!