Enigmatic Modifications

Samantha has the ability to change her appearance; she was a junior in college before she first figured why she could do it. It wasn't so much of a conscious effort as it was a feeling that she could do it.  She was in the girl's locker room after gym class and was sitting next to one of her friends after their showers, when she felt herself getting changing. It happened again when Dana one of her sorority sisters shoved a Victoria's Secret magazine to her face to look at a suggestive photo. She felt that same strange feeling she had felt in the locker room.  The trigger had to be what her friends were thinking.
Knowing what was about to happen she grabbed the girl by the arm and pushed her out of her room.  She then slammed the door behind her.  She decided that she needed to test the theory to verify what was triggering the transformations. She would have to make sure that no one else could see through what she had done so she set up the test. She lies in her room one night waiting for her housemate to start her nightly routine.
Since everyone left for break, she'd been going to bed earlier.  Samantha didn't have to wait long.  She relaxed herself and let her fantasies wash over her. Just as she suspected, the change began. Now what to do with that knowledge?.