Ariel was adjusting to life on the surface with such an ease that it worried her. She was just so happy, so stupidly happy that she had never known that things could be this way. Under sea, she was restrained unless she struggled, banned from anything exciting unless she looked at it in secret. But here she could see everything, touch everything while being encouraged.
She liked it. She loved it.
She loved the people here, from Pepper to Happy to Tony, and even the 'AI' voice that made up JARVIS. But she hated herself for it. Out there, beyond the windows of Tony's home her father was beneath the waves, as were her sisters, Flounder, and... Oh she missed them more than her tail. She wanted to sing with her sisters again, she wanted to sit in her father's lap and watch him show her his magic. She wanted to go on her adventures with Flounder and explore her father's kingdom... She wanted to feel the currents of the ocean and see her hair sway with it.
But at the same time, part of her, now, standing on feet of all things, feeling the heat of the sun on her skin, wanted nothing more than to stay here forever.