On the surface, it does seem like Aphrodite was cruel to Psyche. But a new relationship between a bride and her mother in law is often hard at first. I recall when I was first married, I thought mine was critical of me. Now, with the perspective of age, I realize she was trying to tell me I worked hard and was being too EASY on her son! Also, Psyche wasn't immortal, although that was taken care of later. So at first Aphrodite didn't think Psyche was good enough for Eros. Many parents don't think a partner is good enough for their daughter or son at first; they need time to get to know them better.
So Aphrodite was trying to teach Psyche the tasks which women must learn, so others don't take advantage of our kindness, even our loved ones. Sometimes, like me, it's hard for a young woman in love to understand that. Psyche was only trying to help her daughter in law learn important lessons a mature woman needs to learn.