How about not offering to rub your back. How about just saying sorry to hear you're in pain let me know if there is something I can do for you. Seriously. If she wants you to examine her back or rub it she will ask.
No you shouldn't say she looks for the worst in you.
Stop trying to over analyze and mind read stuff.
Again what are you doing to GAL at night. Why are you around your W so much?
