My building wants to throw out an abandoned Indie because of her barking. I’m fighting alone need help (India)

Hi everyone,
I really need advice because this situation is draining me mentally.

About 2 years ago, someone abandoned a female Indie dog in our area. She had a collar and was around 1.5 years old. The building owner felt bad and decided to “adopt” her.
In the beginning they treated her very well — good food, AC, everything.

But after a few months she started having a pooping habit inside the building, and because of that, the owner actually planned to leave her at a shelter. I couldn’t let that happen because I know the condition of shelters in India, so I stepped in and worked on her routine myself.
After many weeks, she finally learned to poop outside and everything was fine for a while.

But from the last one month, she has suddenly started excessive barking at noises, strangers, random sounds, anything.
And now the building people are again getting irritated and saying things like:
“Isko road pe fek do,”
“Bahut bhaukti hai,”
and some even suggest hitting her to make her quiet.

Because of her barking, I literally end up arguing or fighting with someone in the building every few days.
I work full-time, but I still manage her walks, food, safety even though she isn't officially my dog. But I’m the only one who cares, so she has become my responsibility emotionally.

I’m scared that one day when I’m not home, someone might harm her or dump her somewhere again.

She is now around 3.5 years old, spayed, very sweet, but clearly anxious.

I need guidance from people who understand Indies or anxious adult dogs:

👉 Why is she suddenly barking so much?
👉 How can I reduce this behaviour?
👉 Any good trainer/behaviourist in Delhi you can recommend?
👉 How do I handle building pressure when everyone is against her?

I really don’t want her to be abandoned again. Please help I’m losing all options.

Thank you.