Hi KimberlyG71,
For help with Siri reading your messages, check your 'Automatically Send Messages' option using test the steps below found in the article here: Send and receive messages on iPhone
"Use Siri to send and receive messages
Siri can read your incoming messages out loud to you, and you can speak a reply for Siri to send. Learn how to use Siri.
Siri: Say something like:
- “Send a message to Eliza saying how about tomorrow”
- “Read my last message from Bob”
- “Reply that’s great news”
You can set up Siri to automatically send a message after it has been read back to you. If you want to skip the confirmation step when sending messages, go to Settings > Siri & Search > Automatically Send Messages."
Best.