The Great Gatsby, her next remark made me rigid

I'd like to know the meaning of the phrase "made me rigid" in this extract from the chapter Eight of The Great Gatsby:

“I’ve left Daisy’s house,” she said. “I’m at Hempstead and I’m going down to Southampton this afternoon.”

Probably it had been tactful to leave Daisy’s house, but the act annoyed me and her next remark made me rigid.

“You weren’t so nice to me last night.”

Thank you;