look at yourself man , you are also mistaken by generalizing in "how arabs treat indians"
first check how indian themselves treat indians then make your judgment.

second issue, you described her by "woman in abaya" planting in our heads that if we see in the future a woman like this we need to run.

third issue, everyone is responsible for his own mistakes, and it will be misjudging by generalizing to his or her own nationality.

commenting on the woman by two points:

maybe she was frustrated by something or by her husband and she didn't find anyone to pour her trash on except this poor other woman.

second point, they call about the month of ramadan "alfadda7", it means the month who revel the masks of people,since mistake of one human can be occur by "waswasa" by satan or by "nafs" by your own soul, demons are locked in ramadan , so that means this action is just what the woman is and how bad she is.

in both cases, shame on this woman, and don't worry , whatever goes around comes around