AITA for reporting neighbours

So I live next door to a sweetheart elderly lady, 94 yr old, lives alone and has dementia, does have carers three times a day, who say she shouldn't be living alone, but reporting be down to the family and they are powerless to do so.

Her husband worked all his life and put a decent little nest egg away for her.

So going back to September last year I messaged her son her telly was up loud, and it was quite late. Turns out she had fallen, spent 2 week hospitalised.

When she went in he was panicked, because he maybe forced to put her into care.

Back story is, she gave him a chunk of money to go buy a house many years ago, but he bought a static caravan in a holiday park, which has 15 years expiration date, where you either move the caravan offsite, or they buy it back off you for pennies and you buy a brand new one back.

There has been an agreement made between him and his brother that he can have the property and he gets everything that is in the bank, if she does go into care however, they split the money minus what he already has received, which won't be enough for him to buy another property outright.

I messaged him worried last night, saying it was late and her telly was up loud again.

He didn't answer straight away so I looked through her window and reported back to him I could see her zimmer but was unsure if she was okay.

He told me to mind my business and I had no right to look through her window. I thought he would be grateful he has someone to sound the alarm if his mum gets her. (He told me about the alarm in the street prior and said when she falls and presses it the company call him and it's pointless as he lives so far away, so just waits for the care company to go out.... pretty much laughed about the situation)

He said I don't bother with her, and to stay out of it.

I did used to pop over more often via the balcony which we share, but I asked, in a very tactful way that when they were over would they mind watching their dog on the balcony as it was urinating over my back door (which I let slide for not wanting to sour relations) but had just stepped out into dog excrement, which I had to bring up as it's not acceptable. There was no apology. He just erected a flimsy chicken wire fence on the balcony dividing it.

Poor old lady thinks people are breaking into her house and hiding behind furniture when she is there alone.

I've seen first hand how he treats her which isn't great. Making her get up to get the remote if she asks for it, saying she is getting lazy and needs to do it herself.

He had to stay with in lockdown as his caravan is classed as a holiday home and everyone had to be offsite, they left her screaming in bed, saying how annoying she was and her mind is going, turns out she had a urine infection and went into hospital.

They get paid for 16 hours carers allowance from the government but only do her shopping and go. Spend 2/4 there tops.