is loneliness specifically reserved to 'Indian women'
Yes, they are indeed a very special case. They do not associate with any other women except those in their own caste/class/clan, which makes the pool of potential social contacts for them in Poland either very, very small indeed or totally non-existent, considering how few Indian women their are in Poland to start with. As for socializing with Poles or other foreigners, forget about it. That just ain't gonna happen. They never "settle in", just bide their time until their husbands find a better job in a better country.
Money helps of course
No, it doesn't just help, it is essential. No money, and she might as well be in jail, or married to a lighthouse keeper on some remote island of the coast of northern Norway with only awks and puffins for company.
And even money doesn't help much when you don't speak the language. Once was hired to teach English (absolute) to the wife of a stinking rich Swiss bank vice president. The only language she could speak was Swiss German. She couldn't even speak Standard German, and told me that the German women she had met in Wrocław laughed at her or just plain couldn't understand her (I have to admit that her attempts to speak Standard German amused me, as well). We had a great time together, as I showed her the city, but in the end, I was her only social contact, and that was not enough. She went home for Christmas and never came back.
Now multiply her frustration and loneliness by a hundred, and you'll get an idea of what the wife of a poorly paid Indian has to face in Poland.