Yes, your sister in law should call Child Protective Services, Adult Protective Services and the ASPCA or Humane Society for the dogs. This woman is obviously in need of professional help for her mental problems. Call and ask to remain anonymous. I am sure she has problems with other neighbors too. She will suspect everyone.
Don't talk to her husband and do sh*t that like that. Wouldn't make sense if the husband doesn't know his wife till now.
Try informing a department where they can keep an eye on her behavior and stop that influence on her innocent children. What the efff is she thinking about?
Ignore her, If she tries to talk to you rudely the next time even though you didn't talk to her, tell her your calling the COPS. She can't do nothing with any gang or whatever she says. COPS are Cops who can handle these issues and put her across the right departments for her well being.
Get her to speak in confidence with Citizens Advice Bureau. Hopefully, they can lead her in the right direction and advise her of her rights. This is the first step she should take other than contact a solicitor which may be costly. If she does decide to contact a solicitor again I would get advice from CAB as just like a GP some High St. solicitors know a little bit about everything but not specialise in one thing so it is important she gets a solicitors who specialises in such matters.
I'd call the police. That is child abuse and neglect!
your sister in law can call the cops and report her or something and can also call social services and just tell them that she would like to be anonymous and when the baby daddy goes home and takes out the trash or something your sister and law can talk to him
She sounds like an ignorant piece of trash. A loud-mouthed, cocky slapper (my English slang). Go and talk to the husband, seeing as that's the only person she ever shuts up for. If she ever gets out of order, call the cops.
Why don't you mind your own business and stop sticking your nose where it doesn't belong!
She pays rent, so it's her home. She will raise her children as she sees fit, you fascist. If noise is your only complaint, then you have too much effing free time!