My parents are like that too. They aren't strict, they just need to know that mom and dad won't be with you forever, so you need to take care of things without our full help. My dad never liked animals, so we aren't getting any more for a while now.
For what it's worth (Although it probably isn't worth anything) I am younger than that person and I have school, homework, sports, and other things to do- not to mention take care of another dog, cat, and sometimes the 2nd dog- and I still spot clean twice a day, give my piggies food and water and hay and floor time and veggies and snuggle time almost every single day. I would be in heaven if my parents let me adopt that many pigs, but two is their limit (for now lol). I don't know both sides of the story, and I'm not hating, but if I ever said I just wanted to move on from a pet, my parents would say: "No way! You committed to this animal when we bought it, so you are going to take care of it until it dies.", and I respect that. If I gave an animal away, I would never get another. This is just me. There might be school problems, or whatever else, and she might have a good reason. I don't know.
I'm glad they are going to good homes, however.