The Secret One

A long time ago before the marriage of Moon Butterfly and River Butterfly, there was a secret relationship between Moon and a certain lizard, Toffee.They were a happy couple, until..Moon got pregnant.
Before she birthed the child she left Mewni for a couple of months, letting her other 'beloved' take over the castle.While gone she gave birth to the baby but had to leave a couple of days later.
The bond between a so-called 'monster' and soon to be queen would cause all hell to break loose.She had to leave..she had to leave her newborn and true lover.
Once back to Mewni she would have to become queen and give birth to a man she didn't even love.She gave birth to a baby two years later.She was lonely and very depressed.So the queen put on a strong and miserable mask and raised a blonde, all human, baby princess.