should i talk to this girl or wait?

[Stephen]

so i had high school oriantation and this pretty girl from a different school was in my group. although i never really talked to her, when i got home i added ehr on facebook. she quickly posted on my wall that she had lunch with me. but no other classes, then so i sent her a chat, she replied, then i replied, then she replied, etc until she had to go. so then i chatted with her again two days ago and then i had to go. so then i sent her another chat invite and all im getting right now from her is, thats good, no problem. btw, i said i had to go to my job, but at least it pays well, then she replied, thats good. finally she asked me what my job is and i told her and all of a sudden she started asking me questions, and said how cool my job was. finally she said she had do go to bed. so what do i do now? do i send her another chat or wait? btw i waited like an hour today and received no other chats from her. and she is online alot, and keep in mind i have only seen her once in my life, oriantation