I hope he doesn't actually file suit against her. Partly because she's so obviously nuts that I'd feel a little bad. And partly because it's a bad idea to get involved in a court case with a crazy person. You may win in the end, but your lawyer can rack up some big bills keeping up with a manic loon.
I think GoDaddy is to blame in this. Taking multiple sites down for one DMCA take down request. And the blogger too seems too happy about taking sites down as he does. He should work harder (at least for GoDaddy sites) to contact the sites directly and get a license fee.
Diplomacy before nuclear war.
I agree that GoDaddy is the problem here. When people pick hosting companies, they should think a little about how well they'll be treated when something goes wrong. Because something always goes wrong eventually.