The reaction is unexpected. It's not as if Rey really thought Padme would blame her for what she did, but the fire in her voice only reaffirms that Rey did what she had to do.

"He was my grandfather," Rey finds herself saying, almost flat in tone as she looks back at the chair. "I only found out just before I faced him. I spent almost my entire life on a junk planet waiting for my parents, but he-- he killed them. They were never going to come back for me."