Rachel undulates her pseudopod carefully, and begins to glide out of the tub.
"Oh, this is weird... oh, God, this is... ugh." she's mildly repulsed by what she's become, but at the moment, her brain's first concern is exploration. Its vessel has changed and it needs to know what it can do.
She's bigger than she expected, her enlargened mollusk body taking up nearly the entire bathroom. Her skin has taken on a more bumpy texture, glistening with its increasing mucus output. When she moves her arm, she can her something inside her crackling, and she doesn't like it.
She surges forward, pushing towards the door, and finds herself stuck once she gets there. She's too wide to fit through. "Ugh... gotta... gotta... urgh..."
She surges forward, pushing against the doorframe until she hears a loud crack inside of her. It hurts for a moment, but then it changes to a sickness, and she heaves, vomiting a thick white substance. That's what it is on first glance. Upon closer inspection, it is a powder mixed with her thick viscous saliva.
"Oh, gross... it's... it's my... bones? Oh, God... Gross... Oh geez..." And then she heaves again, vomiting more powdered bones all over the floor.