Speaking "Kawaii"

Last night I was on aim with my sister who is at UCSC right now. At first, I was the only one talking so everything was fine. Once my sister responded, I was so lost & confuse. She is one of those extreme aimers who made up their own lingo. So our entire conversations was filled with her "cute" words such as "tomolooooo" and "kekeke". After 30 mins of not understanding half of what she wrote