I am so sorry to hear of this.

Please do not be so hard on yourselves. I believe that ALL (repeat.... ALL) things in life come with the possibilities of consequesnces. If you knew going in to the chipping procedure that it had a .05 % chance (just a random number here people, not a hard fact) of causing cancer, would you not take a 99.05 % chance that the chip would HELP to return her to you if lost?? Not everything is a guarrentee.

Rutherford had gotten a fibrosarcoma at a vaccination injection site, and it eventually cost him his life.....but I do not stop giving vaccines!! The diseases those vaccines prevent are much more commonplace than the cancer that he grew. On the reverse side, if Rutherford would have dies from panleukopenia or rabies I would be kicking myself for not doing my part in getting him the proper preventative measure.

I sure hope all that made sense, because I do not wish to take away from Halo's sickness.....I just hate to see you blaming yourself for things that just happen sometimes.

Best of luck with dear Halo.