Why does Alexa SUDDENLY say, "I'd rather not answer that?" When she would have no problem answering before?

OK so my sister bought my parents an Alexa a few years ago which they NEVER EVER USE except as an alarm system every morning. When they would go away for a few hours, I'd use Alexa to make sure it's not just sitting there doing nothing. So I ask it some fun questions. One of them was, "What's Kim Kardashian's bra size?" and she would tell me what her bra size is. Today, which is a month later, I asked her (it) the same thing, and NOW she said, "I'd rather not answer that."

WTH? What happened to Alexa? Why did she change and get more boring? She gave me a good answer before and now she doesn't want to answer.