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?
Maybe not like, shoot them? I'm pretty sure a trained police officer should be able to handle a little old lady with a baseball bat. And even if she were Babe Ruth with that thing, I'm also pretty sure they could have restrained her, tased her, or even shot her non lethally. Basically, unless we are dealing with a trained, professional fighter in decent shape, firearm not= melee weapon. And this was a blunt, not a sharp.
If your mom got off her meds (hypothetical) or was startled awake by the sound of unknown men entering, and grabbed a bat to defend herself, well, I hope no one splatters her brain all over your living room carpet. You'll need new carpet, for one. New moms sold separately.
Edit: you mentioned a Taser in a later post. Still, stuff like this is a no brainer. Cops shouldn't be going into situations that passionately, and with that little situational awareness. If they were entering the residence, they should have been aware of who could possibly be there;; her condition would have been known and accounted for. The police behave like special forces nowadays is the problem. And the fact that they don't get prosecuted for shooting first.