I would say pull the player aside and talk to her/him (you did not specify which). Invite them out for coffee or some other such public place, break the ice for a few minutes, then tell her/him your expectations of the players at your table. Then ask them if they understand what you just said. If they say yes, then alert them that if they cannot live up to those expectations, that they will be voted off the island. You can include things like learning the rules (which they may already know if thy are quoting the DMG to you), not sexually harassing your players(or you), and respecting the beliefs of other on those ever so sensitive topics. You could also institute the 10 second rule. I use it for the games I run here in town at the youth shelter. I have chess clock, and I just start it when someone appears to be faltering on their turn. When 10 or so seconds pass I alert them that they are going to be skipped if they dont act immediately. They will huff nad puff and miss a few turns, but I have that over time they start paying attention so they can act. Another tactic I use is when I announce the start of Player A's turn I also announce that Player b will be acting next so they can start thinking about what they want to do.
Out of curiosity, is the player playing at level 2 because she forgot to add the exp points to her sheet, or because she missed that many sessions? If you just don't like the player (meaning this is not someone you would not want to do something that wasn't gaming with) then maybe you should ask them to quit you. But if you like the person as a person and thy just arent gaming in a way you like, maybe you should be a little more engaging and assertive in your expectations. I have found that in my own experience, that often folks act a certain way because that is the norm for them, if thats not cool with your group, you should at least let them know, before getting to banhammer.
I have a couple of gaming buddies I have had for years now, that when I first started gaming with them I did not like their style at ALL. I eventually spoke to them and we came to a common ground, and I have more friends as a result (some of them are my dearest friends in fact). I have also put some gaming agony from character diffeerences out its misery by talking it out and deciding to go my seperate way afterwards.
But it all starts with taking the player out of the game area, and having a real discussion with them (I reccomend you do it 1 on 1, inless the person is serial murderer creepy, as folks tend to react differently when "confronted" in front of a group as they do when "approached" in a more private way).
But all of this is moot if you just hate the person and want them out. If thats the case, then ask yourself how they got into your group in the first place, and add that action to that list of things never to do again, kick them out and move on.
love,
malkav