There is one thing for sure that your cancer journey will teach you is that there are some things in life that are worth fighting for, some people that are worth your love and understanding and some things things/people that quite frankly need to be cut lose.
At a time like this you need to surround yourself with people that will love you (warts n all), support you (even if your opinions differ from theirs) and have your best interest at heart.
Maybe your boss is assuming that until the results are in it is possibly benign? Is that a possibility? Lots of lumps turn out to be nothing? Or maybe she is just so wrapped up in her own stuff to care about you.
Dont sweat the small stuff, there is assistance available if you were to quit your job.
Good luck with your decision, but at a time like this you should be concentrating all your energy on yourself and not losing sleep over her comments.
Tanya