iMessage failed to submit a message with Siri on a specific Contact

I'm on an iPhone 11 with iOS 18.4, and I'm facing the following: I have my wife added to my contacts with her email (the same as her Apple iCloud) and I can talk with her through iMessage, but when I try to submit a message to her through Siri, it fails the message, but if I go to the failed message and try again manually, it submits successfully.

I troubleshooted it and noticed it happens with her contact only. Also, when she messages me and I reply with Siri, it works. The problem just happened when I sent her a message directly through Siri.