It was an unfortunate incident. But I will give the benefit of the doubt to the cops. Perhaps they were unaware that the lady had schizophrenia. What you are supposed to do, when someone charges at you armed with a baseball bat?
Taze them. They have those right? If not then they should.
The lady was no physical threat.
There was zero chance of her doing any physical damage whatsoever to any of the cops.
Zapping her with a tazer would have been as enjoyable to the cop as killing her though and he would have faced less paid vacation.