She's a person who knows who she is and enjoys being herself. Often misunderstood as being flirty or flighty. Really they just enjoy being around all kinds of people. Most Jenni's are kind hearted and loving. They tend to be people pleasers which can get then onto situations they never intended to be in. You will know where you stand with them. Even if they try to hide how the feel about you, thier emotions are all over their faces.
"Man, Jenni lookes pissed at me. She probably is."
"I'm glad I have a Jenni as a friend! She's always here for me!"