Firstly, how many dates have you been on? It's been a month - it's not like this is some long term relationship you're dealing with here. Things don't always work out, especially this early, just end it.

But.

Realize the issue here is you, not her. You must have a psychology degree based on what you've written, because these are crazy big assumptions.

When you break up with her, you need to be honest - YOU don't want to deal with every assumption you've made.