Very hostile place for a library! So bear with me ...

Very hostile place for a library! So bear with me to hear the details:
We were there yesterday where I wanted to stop to look for a book, I had my child with me, and so I opened a computer for him on a kids YouTube show, while I went to look for a book, a lady that looked like homeless was sitting there on the computer next to him with another young lady (that might be her daughter) checking her Facebook and eyeing us the whole time, I did not think much of it then went to get my book, then I saw her screaming for the librarian and pointing at my child saying "hey where is this child's mother"! I was barely 50 feet away and within eye sight so I pointed to her that I'm here, she looked at me and kept shouting that I left my child and disappeared and she doesn't have to watch my child for me! At that point I came to tell her that I was there the whole time and I never asked her to watch him, she kept going on how she felt she had to watch him and that she is a woman of god... etc of all that crazy talk while her daughter was repeating same thing both were yelling very loudly, I asked them repeatedly to stop yelling when they never did I looked at the library I asked her to quiet them as I don't have any interest talking to them and the library should be a quiet place, she looked at me and said they are right you have to watch your child!!! The crazy lady kept saying thank you I knew it and kept going on, the librarian went back to her desk didn't even ask her to respect the place.

This place is a very hostile towards mothers because :

1. not only once or twice but many times it happened that my child happened to raise his voice playing or laughing and a librarian would jump on me even on the first incident reminding me it's a quiet place and he should be quiet! But 2 adults (the crazy lady and her daughter) screaming for at least 10 minutes was not addressed

2. I did my search and came to a conclusion that I did nothing against the library regulations or even state laws by leaving my child on the computer and going to grab a book, I didn't leave the premises or even go out of sight! So my child was not unattended, not for a second, and there is no one more caring in this world about my child's safety than me so those cheap acts of "I'm better than you" I would've expected on the street but not in a presumably respectful library, obviously the librarians there need to be educated on staying within their job description as librarians and not start acting as counselors, and they will bring this place down, reviews are all over the internet saying the same thing.