Martha.
"Ok Jen, I'll try to go as quickly as I can."
She pulls up her skirt to sit on the toilet, and Jen feels warm from her. Then she starts to pee, in which Jen feels warmth in the bowl too. Then she tries to poop, leaving a poop stain in the bowl, which Jen feels it, and gets grossed out. Martha takes some the toilet paper, and cleans her off. She pulls up, and asks Jen, "Hey Jen, how do I flush you?"
"U-," said Jen, before getting an idea, "Actually, your suppose to get me naked, and cup my boobs."
"Gross, but whatever, cupping breasts is better than leaving a toilet unflushed."
She takes off her shirt and bra, and starts cupping her. Then her legs were forming back, in a criss cross pose, and saw the toilet handle appear.
"Ms. Smith, why we're you watching me using the toilet on the bowl?"
Now she was confused that leads her two things. One, she has full control of the item, and two, people will remember everything different if she changes or not. In the middle of thinking, she got her attention back to see Martha gone. With this information, she decides to call her friend to tell her about it. She thinks first by transforme or dare her to be not affected, then tell her the ability. But just in case she says her name, she decides to stand/sit on...