Im getting out of chicken keeping for this exact reason. I love them way too much and it tears my heart out when I lose them.
I was gifted 7 baby chicks 3 yrs ago, first time with chickens. It was love at first site.
My first loss was to a hawk in fall when they were 1.5 yrs old, cried for months. Last spring I lost 2 to reproduction issues more crying and heartache, then this spring I lost another to reproduction issues and yet again my heart gets ripped out.
Over this course of learning I found out the chickens I got are production reds(RIR) not heritage breed but hybrid.
They lay a ton of eggs, but takes a toll on their system and things go wrong. Mine started laying at 16 weeks and pretty much lay nonstop all thru winter even without additional lighting.
Its really sad what humans do to animals for their benefit 
I have 3 left and one of those is a walking miracle...she laid a lash egg at 1 yr old, I pegged her to not last but about a year with her issue. Well shes 3 yrs old now and still hanging on. The vet cannot believe how and why shes still here and how shes dealing with this issue for 2yrs. She has a swollen belly and its been swollen for a really long time, she still gets around and it doesn't seem to bother her, somehow she managed to handle whatever is going on with her. She had xrays and ultrasound and was given 2 weeks to 2 months to live...but she is still here, for who knows how long yet...and the biggest kicker is she was the lowest on the pecking order, got bullied alot and for that reason she spend many days in the house during winter when they were more cooped up.
So I am down to 3, and once I bury the last of my girls, I am selling my gorgeous mansion of a coop and run and calling it quits. My heart cant take all the pain of the loss. I know its life but I am like you and cannot control my emotions....it sucks!
Also I saw where you have a baby monitor, I do too...but be careful as they emit a higher RF and I tested this with my Trifield RF meter. When I placed the monitor in the coop and for months my girls were all naughty and crazy when entering the coop at night, until I figured out the monitor was driving them nuts. So I moved the monitor into the run so the high frequency doesn't bother them but yet I can still hear if anything happens. Since I moved the monitor they been so calm! A bit scary as these are baby monitors!!