Have them call the police nonemergency number to let them know what's going on.  

If she starts calling police,, report her to social services for well check,, she might be off meds.. personally I bet this happens sooner than later..If  you need to you might be well advised to have someone go with you if you go inside for any work.. so she can't make claims of xxxx against you. ya never know.Phone calls.. that's what voice mail is for..If she had that big of emergency after hours, she can call cops, fire dept, EMS, 

In those cases, you'd want back up with local police or fire department.

if tenant is being harassed, they should call police. if tenant is making excessive noise at unreasonable hours, neighbor should call police.

Can I say no to the police?

Advise them of the local noise ordinance and THEIR $500 fine when the police come out the next time.  

After getting all of the facts, I informed her that I would be changing the codes on all of the door locks and asked her to file a police report to have on record.  

We own the equipment, and told them after 6 months, they can pay for the service on their own (which automatically calls the police) or just use the equipment as a general alarm.

You can read about it here; if you google search you will find news video as well:http://theweek.com/speedreads/546160/police-device...

I can't believe it took two nights and the day in between of constant partying including a 100-person party bus and 7 visits by the police for someone to contact the owners!