Time does help. I was dx in 2012 with breast cancer and went thru surgery, chemo and radiation. I take tamoxifen everyday for the next 5 years,still see my onc dr and have bi-yearly mammos. I went thru some pretty heavy duty depression about my illness and no book ever helped me. I didn't have much support from my husband or family so dealt with everything pretty much on my own. I do have lingering side effects from the treatments and I never forget that I HAD cancer, BUT....it does not overtake me 24/7. I tried a counseling but it wasn't for me. I tried the support groups and still not for me. There is a grieving process you go thru as well as sheer rage; I think that is normal. I try to not stress myself out with trivial matters; I try to eat healthy and am working on getting to be more active. I still have my days that I curl up and sob for a few hours. As long as you are there to listen to your SIL, that is such a huge deal. My BFF is in AZ; I'm in WA state and if it hadn't been for her constantly texting me or calling me, I'm not sure I would have made it. Having cancer recur is always a worry. She just has to listen to her body and if she is confident in her drs, then to follow their advice. She needs to be her own advocate now however, always be alert and tuned in to herself. She'll make it--it may take awhile but what doesn't, right?