Being owned buy F&^@#%& Drow

CC, CC, CC. Buy sheepstick, Euls, etc. If she has Lothars, buy dust, and gank her. But if she's that fed, you will most likely not have the gold to buy some of these things, and she'll probably 2 shot everyone one your team. But with some teamwork and some nice stuns, you can take her down.

The annoying thing about a fed drow is that even though she seems like a paper hero, she has loads of armor so nukes and CCs are your best bet. Or get someone on your team even more fed then her :D

In the game, as well as real life, its always best to prevent, rather than cure as this tends to be extremely hard. This being said, if you didn't prevent her from getting to where she was at, then obviously its going to be hard to stop her. If you focus her in team fights, then she should go down pretty easily as she is still relatively squishy late game if no Strength items were bought.

Blademail. Rexxar. Halberd. Evasion. Stuns

It's impossibru... nuff said