Lizzie realized that there was no way she could act on her attraction to Erica and still have Erica as her brother/sister. But she wanted to at least try... well, she could always change things back if it failed, anyway.
First she had to work through the menus to find out how to change Erica's family. It was confusing, but she managed to have Erica not be related to her. She also made sure that Erica was a lesbian.
Lizzie recalled her Sailor Moon--and 'Erica' wasn't all that far from Sailor Uranus's name anyway. Sailor Uranus would routinely dress as a guy and flirt with girls.
"Erica is disguised as a guy," she typed. "She's disguised well enough that people who look at her think she's one, and she doesn't look or sound freakish. Her friends and family don't mind that she does this at all. She wraps her breasts in cloth while disguised so that that they don't poke out too much. In disguise, she is going on a date with Lizzie, who she really likes."
Lizzie confirmed the change and immediately heard a doorbell. She got up but then paused. Something was different--of course, the room. But Lizzie looked back. The computer was gone! Of course, if Erica wasn't related and wasn't living with Lizzie, her computer wouldn't be at Erica's home.
She answered the door, and Erica was there. "Hi, ready for our date?" she said.