Apple Watch initiating unwanted group chats?

40% of the time that I messaged my mother off of my Apple Watch, it includes it in a group chat with two of my coworkers. I have no clue how this started, because the four of us have never been in a group chat before, and I will simply tell Siri send a message to Momma 💕40% of the time that I message my mother off of my Apple Watch, it includes it in a group chat with two of my coworkers. I have no clue how this started, because the four of us have never been in a group chat before, and I will simply tell Siri send a message to Momma 💕 and it asks me which one and I click her phone number. Five minutes later I’m getting a response back from my coworkers. Please help 😰

The most recent time, I texted off of my Apple Watch, and the full conversation is visible on my watch, but when I go to my iPhone my message is not there. Also it appears to be intermingling said group chat, with texts with my mom that I know were one on one conversations within the same thread. (On my watch but not phone.) I am so confused