My email is gone and the daughters is there instead

It's possible to have more than 1 email account associated with an Apple ID, without the 2nd address actually being one. So for example while my Apple ID is from a personal domain, say xyz@1234.com, I also have an icloud email address xyz123@me.com that is associated with my Apple ID. If your wide used a mobile me account, maybe as part of a family pack, and you migrated it to icloud, it's possible that it has gained such a link in some way.

I see the mostly likely cause of this being the possibility that your default sending address is set to your email address. I say this because it appears that you initiated the conversation.

You can check (and change) this by going to Settings.app -> Messages -> Send & Receive. Under "Start new conversations from:", observe whether your email address or phone number is selected.

If your email address is selected, this would be an easy explanation as to why this happened.

Otherwise, as far as I know, (and I have just went over this to verify), it is impossible to extract the email address that is associated with an iMessage phone number from just a regular iMessage "text".