I don't think anyone said that she shouldn't be around. Just that she's an annoying whiner.
"The Cheat is GROUNDED! We had that lightswitch installed for you so you could turn the lights on and off, not so you could throw lightswitch raves!"
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- I'm always all right.
- Is all right special Time Lord code for really not all right at all?
- You're all irresponsible fools!
- The Doctor: But we're very experienced irresponsible fools.
Philosophically, I'm probably a MEH, but I recognise evil like THOOLAH when I see it, and cannot in good conscience step aside from this fight. MEH can be the Switzerland of WWII in this fight if they wish, but I'm joining La Resistance!