I don't hate sree but I dislike him intently! He is spoilt, rude, childish and hypocritical. He does not like being told no, and the people in there tell him no on a regular basis!
Its probably the first time in his life he has been told he is a brat and he is in shock! Lisa is pandering to him because she doesn't like Marcus and because Noirin told her she shouldn't treat Sree like a child.
Lisa doesn't even like Sree nuch herself as you can see when she is talking to him, but as long as Marcus and Noirin are in there she will take Sree's side. As soon as they go she will turn on Sree like a shot!