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Well there you go then. The only thing left to decide is if this is who you think you can be satisfied with for the next 10, 20, 30 etc or so years? Make the decision before you have kiddies. ;) ...

This is how I see it, OP: She doesn't have any friends of her own that she too could do a woman's weekend away kind of thing with? Would she even consider something like that or is she that blah?
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Then I suggest you get yourself a hobby or interest that you can do on your own. Not because she "hates it when she's alone" but because she needs to learn to miss you and not take you for granted...

Then tell her WE'RE reading this book together this weekend and that if she doesn't put in the effort, you'll be leaving. She knows you're not going anywhere so she's apathetic towards your needs.
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... She's not understanding that she's not meeting your needs. I wonder if you are straight forward with her or do you beat around the bush? Are you expecting her to do what you would do for her...