This totally sucked for the young lady.
I am not going to rehash my absolute disgust about cops hitting the wrong location and the possible negative consequences for the people inside and the lack of consequences for whomever is responsible for fucking up.
This was a bad event that could have gone worse if it was not for the doorbell camera. Without a visual, it would have been understandable for the mom NOT to open the door, no matter how much people on the other side claimed to be police. That would have led to a dynamic entry, fueled by adrenalin and maybe a stun grenade or two. A death could have been very well in the cards.
Out of all the unsavory scenarios, this one was the one coated in less feces.
How they stop this from happening is there need to be consequences for cops that fuck up. If I fuck up at work and I give the wrong medication I can lose my job.
Maybe: get the wrong house, mandated training for the first offense. Increasing suspension for the next couple, termination for 4th.
And personally pay for any damage, physical or mental.
Yikes. Pretty scary indeed.