I haven't played it, but my wife thought it was too difficult, also.

However, I was talking to a coworker and he mentioned that one of the DLCs really ramped up the difficulty, so she should try it without that particular DLC (sorry, I don't recall which one).

Anyway, she turned off that DLC and found it much more playable. In fact, I'm pretty sure she went on to finish it.

So if you're keen to give it another go, you might try it without whichever DLC it is that makes it harder.