Friend Help! Shes being Nasty&RUDE!?

Okay well my friend Gianna and I got into a fight. It all started when my friend Jason saw a picture of Christi, one of my other friends. Now Jason and Christi never met, never talked on the phone, and only spoke on Instant Message. Christi did not see a picture of Jason but Jason saw one of her. Ok so they were about to meet but then Jason just found out his parents are going to get divorced; which now makes Jason depressed. Jason's parents decide to send him to Europe until September because they didnt want him around for the whole divorce battle. Then Christi gets all upset because they were going to meet, possibly go out and now they cant. OK so the next day, I text Christi to make sure that she is going to be alright. She says she is. OK its all good now. Then Yesterday, Christi is asking me questions about Jason and I am just saying it isnt my bussiness so I want to stay out of it. Then there talking on IM and are acting like 5 year olds saying things back and forth. Christi is..