>>75864653I had a situation like that. Years ago I got 2 cats from the same mother. Then her brother died.
After that I got her a new female friend. The female friend also died. So she had to live through 2 deaths, one of her brother and the other of her friend.
She 100% had psychological damage from it, since her behavior changed. She can't really be left alone, she start meowing and crying if she thinks there's no one home to keep her company. And she started to randomly meow hysterically too like she's trying to call to someone, probably to get attention too, but she does that even while sleeping.
A couple of more years or months and she will pass to, she's already weak and doesn't want to hunt and jump around trees in the garden, just sleeps around me all the time, had a good run of like 14 years if not more. 