Awww .... I can understand how you feel. And it doesn’t stop when they get older. Mulder was 11 when I found out his littermate Jolie was in desperate need of a home as her owner had health problems. She would have been fine - her breeder was taking charge, but I still felt like she was family and we couldn’t leave her. So we ended up taking her in until she passed away at almost 15. Granted, Hoku’s sister will have much less trouble finding a good home at her age, but I get the impulse.