don't be stupid and nasty, she was already here on a student visa
My, my rozumiemnic...such a crazy foulmouthed and infantile response from you! Your immaturity is pitiful. Were you really raised that way? Whoever had that unfortunate job would be really disappointed in you and themselves; I'm sure of it!
Your Indian sister told the world her sob story and it just didn't pass muster. She asked for a suggestion and I gave it to her. It's take it or leave it.
Face it, she's just worried about her visa status and sees a divorce (after just two months!) as a means to claw back all that money she "invested" in her "marriage". If she was such a good and faithful wife then she would be talking to her so-called husband to find out what is troubling him. But no. Instead she is on here asking complete strangers how she can snatch victory from the jaws of defeat.
Besides she has PLENTY of options available to her. She could (and should) fix her marriage and take her Polish husband back to India with her. The Indian High Commission can help her with her husband's visa and Indian citizenship application. She can also go through with her divorce and finish her studies back in India or another non-EU country.
So you are entirely wrong in your apologetic suppositions about this foreigner. It is evident that she no longer has a valid reason to remain in the UK.
Sham marriages, particularly among Indians and Pakistanis, are a chronic and widespread problem in the UK and the authorities there are well aware of it. They have taken strong measures to tackle it and it is no surprise that wrongdoers are still trying new schemes to circumvent the tighter scrutiny and controls.
It is your problem if this reality is too hard for you to accept.