I am sorry for your loss, it must of been a really harsh pill to swallow, I have dogs too and my kids spooked the chickens the other day, well 3 of them ran right towards the dog pen, that scared me, but luckily I was able to get in front of them and scare them back into their covered run, I refused to let them free range again for the rest of the day after that, lol. Do you have any other pullets to keep the other one company? if not you might be able to find it a friend on craiglists or from someone around you that has chickens?? but please do not forget to quaranteen for at least 2 weeks. good luck.
Ema