Okay, so a friend acquired a cat recently by... less than legitimate means.
Let's call the cat Mabel, who is about a year old. Mabel was owned by a young couple. Earlier this summer they decided to go on vacation. However, they didn't get anyone to take care of Mabel while they were gone, and just put her outside. They did not provide any food or water. Mabel was also not fixed. They were gone for a week.
An acquaintance of theirs found this out, and went and fetched Mabel while they were gone. Mabel was terrified and dehydrated. The acquaintance kept Mabel for a few weeks, and found her a new home with my friend. He also got her spayed (she wasn't pregnant, thank goodness!)
Mabel is now a pampered indoor lap cat, which is ideal for her. She is quite timid by nature and gets frightened easily by strange people and animals. Once she knows you she will cuddle for hours, and has a ferocious purr!
My friend recently found a Lost Cat poster, and it turns out her original owners are still looking for her. She now feels guilty and is wondering if she should contact them. I told my friend not to. I believe they gave up all rights to Mabel when they essentially abandoned her for a week. If they had done that to a child, they'd be in jail.
So, AIBU to believe Mabel is better off with my friend?