Yes, it is very sad, and the squirrel has now disappeared, but we saw that she was fatally wounded. They are still young, and you are right, as they don't know about the danger of the electric fences. Thankfully the other three arrived for breakfast and they are all fine.
I don't believe in a previous life, but if it was to be, then I wouldn't have minded being a squirrel Lol. We have some good veterinary practices here, but there was nothing that they could do for her, except to put her down. We don't have any electric fences here at our home, and we will not install any. But, for females and old people it is necessary for protection. Crime is rampant here, and one has to be very careful as contact with burglars can be fatal. The houses here was built many years ago when things were still safe, but a plethora of new developments are now taking place and many of them are being built in the natural habitats. We also don't like it.
But like I always say, such is life.

!PIZZA
!BEER