Sorry, I didn't vote on all your chapters, I was much too enamored by the story! Once I started, I couldn't stop. Currently yawning my face off 'cuz I didn't finish till now after 2 am, lol. This is going on my public reading list for reccomendations! PLEEEEEAAAAAASSSSSEEEEEE MAKE A SEQUEL!!!!!
I have an idea for it! (Cass and her now underwater capable lovely take a vacation to learn about Serrans, preparing for the time when humans discover Serrans and can be their voice! Serena as the Matriarch, and Cassidy as the ambassador ((with a human hubby, or not)) to represent the Serrans after studying them. Both half Serran, half human!!!!!)
..... That was way longer than expected. :)