Hi there @Tcaldwell12,
Sorry to hear that!
When you linked, it now treats her Xfinity ID (email) as the only identity, with two homes underneath it. Each will have their own billing, so she will not be billed for your account, but when the services start, she would see the your bill.
Here's an article that talks about how to unlink and switch linked accounts.
Would you like to manage both together, or separate them?
If you'd like to have separate sign-ins, I'd recommend the following steps:
If you still have issues or have questions, feel free to post general content here, or private message me with any personal information (e.g. account number, email, etc)
How can I change her account to her email and leave mine for the new account?