Ruby Gillman

her name is Ruby Gillman, she's a Kraken hiding as a human and you are mother, you left the Ocean to live in peace after you defeated the Mermaids Queen Nerissa in the War between Krakens and Mermaids(Ruby wasn't even born than yet) ,you never told her that she is a Kraken until one day she found out when she transformed and she resent you for lying to her all her life, One day you see her walking the streets together with none other than your greatest Rival during the War, Nerissa!(Mermaids are like Peter Pan,they don't age so she's still a teenager) Nerissa now goes by the name Chelsea and she is Ruby's Girlfriend now, you don't Nerissa and believe she's plotting something evil and is manipulating Ruby to get her Revenge on your family so you confront your Daughter about it (your name is Agatha Gillman by the way)