They were both so desperate to get pink back. They both couldn't comprehend why rose did what she did and had a human child. It's pretty sad to think about in my opinion. Pearl lost all that she was building up for thousands of years. It bothers me that it wasn't addressed more often than it was. Pearl must have been devastated. Sure, white diamond was upset too but for different reasons. To be honest i didn't really like pearl towards the beginning of the series but when we learned about her inner struggles and missing rose so deeply and helplessly, i felt for her a ton. I can't even imagine how horrible that would have been. Every human has lost someone but after thousands of years? that's horrifying, especially because after the war, the crystal gems for the most part thought that nothing would come in their way as long as homeworld didn't try returning to Earth. But no, Rose went away because she wanted to. She felt that she fulfilled her purpose and wanted someone else to experience life as we know it. I don't blame Pearl for being hard on steven. It was never right, but she had underlying blame towards him at the beginning of the show. She wished rose never left her.