I think that Holly's only acceptable response should be.
1 lay a trap using every bit of run lore she possesses.
2 Kill the Dursleys in such a way as to be sure to bring Professor Dumb running.
3 Spring the trap and make sure he cant escape.
4 cut off his winky and make him eat it.
5 use every method there is torture and mind rape him of every memory he has.
6 Obliviate his mind so there is nothing left. Use Imperio to make Aperate to the middle of an ocean somewhere where he will hopefully drown.
7 Go to Hogwarts and find every memory he has hidden and destroy them.
8 Destroy every portrait there.
9 Just to be thorough set the office ablaze using fiend fire.
10 go find Fudge and do the same to him.