Pavlova is not a particularly convivial companion. She is very focused on her work and defines herself by her successes rather than the amount of friends she has. Instead of going out to parties she prefers to stay at home and have a glass of red wine and win a game of chess against her partner. Harvey is not really a challenging opponent for her, but he plays anyway to keep her happy.
Because of this she still hasn’t been formally introduced to the other Dedes. Harvey is very keen on getting her to meet the others, particularly as he finally became aware that he has a reputation of being a douchbag. He is convinced that when the others see how well he treats his new girlfriend they will change their minds. Little does he know how long it takes to sway the opinion of others once they are firmed up.
I certainly support Harvey’s efforts to get Pavlova to meet everybody and I suggested we should have a little informal get-together tonight as we haven’t had a party for a long time. Harvey virtually begged me to invite Pavlova personally. Only then will there be a chance that she shows up. First of all I thought what a prima donna, but when I spoke to her, I realised she is just very, very shy.
dedepuppets 
Perhaps she is a little embarrassed by her sewer upbringing and feels to compensate she some how needs to work harder or try to be better than others? It’s just a theory.
You certainly have a point here. The poor thing has an array of issues: her family doesn’t support her move and the new acquaintances still only see her as sewer rat. She is living in-between two worlds. After what Mouse has said, I can’t blame her for being a bit insecure and trying to prove herself to the world by working hard.