I'm sorry to hear about your mom, @DenaliBlues and I am also wishing her a speedy recovery.
People's quits definitely can get tested by stressful situations and I really like the list you put together for reasons NOT to relapse. I made several attempts to quit before quitting for good and each relapse I allowed myself to be fooled by the lie of the "ahh" sensation of the chemical craving sensation being satisfied that you described. I also told myself that I would just quit again later. I did make several quit attempts again but each time was harder than the last.
After finding a support group similar to this, I realized that I was simply driving myself crazy by going through the cycle of quitting and relapsing, quitting and relapsing, etc. I really did have a tough time with this until I accepted the fact that it was best to stop torturing myself and fight to keep my quit. Whatever life threw my way, I could not allow it to impact my quit.
Board member Cristobal has an excellent post entitled "Your Quit & Your Life - The Proper Sequence" which sums up how you should never let the events of life give you an excuse to light back up. Please read the link below. I hope it helps.