My wife's text messages to me are being delayed by 3-6 hours. Her phone shows "Retry sending" when she sends me text messages. It doesn't matter if it's just text or if it contains a picture, emoji, etc. Her text messages to all other people send without delay. If she sends a text to a group chat that I am on, I receive the message without delay. This started occurring about a week or so ago. She has tried restarting her phone, but that did not help. Below are some pertinent information, but if more is needed, please let me know.
Providers: Both using Verizon (same account)
Phone: Pixel 2 XL
Text Messaging App: Messages
Android Version: 10
Android Security Patch level: June 5, 2020
It is important that you are able to text with your wife, SeanE23. Has she cleared the app cache on her messaging application, or tried using a different messaging app?