One of your girlfriend's most favorite superheroines were the Zodiac witches, as they were masters of transforming into different creatures with magic, while at the same time saving people from dark monsters. Once your girlfriend was done using the tablet, and hit confirmed, she gave it back to Dr. Terrific.
"Okay, thank you for cooperating," Terrific says. "Now just undress, step into the machine, and we can get started." Your girlfriend did what Dr. Terrific instructed, and got out of her clothes before entering the machine, and waited for the stretchy scientist made of living rubber to work her magic. Unfortunately, you didn't know which Zodiac Witch she chose, so you watch what happened when you see Dr. Terrific extend her arm to pull the lever that starts the machine, and you watch your girlfriend change inside.