Advent Glitch and Natalie_X_x

Later after Later (SO good at these chapter names, huh? XD)

That day, when Advent home, she walked straight to her computer, to find the keyboard missing and an IM chat left open. She glared at the chat and shut the tab, but went to go check skype before going off to find where her father had wedged the keyboard this time. On skype she got her usual 7+ messages, but she disregarded them quickly and headed to her father's room. Seeing as he wasn't there didn't scare her, "Just more time alone." she muttered, before finding the keyboard. She plugged it in and checked skype to find another message. It was from an old friend, who she'd forgotten about. "Oh... Natalie!" She smiled warmly at the message as she plopped down, only to find it was a sad message. Her Father was dead and her younger sister as well. Advent shoved the message away remembering she  loved to joke about dark things. As she responded to them all, she got another message from Natalie it said GG (good game). This confused her. She sigh and decided to reply.

[2:58:21 AM] ☠♪ⓍΩ ☣δø☚•Unst✡ble•☛øδ Ω ☣Ⓧ♪☠: Natalie, what's the deal? -_-
[2:59:32 AM] Natalie Neru (can't let you know my last name =3): Look, I'm just in the mood, ok? I want to do something fun. With you.

Suddenly, wind hit her window and she saw Natalie looking in eyes wide, holding her phone. Advent jumped and fell onto the floor. She looked away, while her dark blue eyes shown with pure fear. So many questions crowded her bairn.
Why was she here?
How is she here?
Is There something she wants from me?
I thought she moved...