Siri sent a random message instead of what I asked

My mum got a txt after I asked Siri hey siri msg my mum hey mum what time should we meet up Siri repeatedly replied to me to who , to who , and when she didn’t understand she sent my mum “the owl” to her phone from my email address !?! I didn’t ask this in any way it’s not safe to use in my opinion . Any idea what’s happening here would be great thanks

[Re-Titled by Moderator]

Original Title: Why does my Siri not do as I simply ask ?