Very good observations SirBigBell. I didn't realize OP was white which certainly changes things.Its easier for you to find another Indian girl if you wish to than it is for her to find another caucasian man if you bail on her. Thats why she keeps displaying high interest and keeps returning each time you cut the rope on her. The dynamics will suddenly change the moment she finds another white brother to replace you. She will brutally ditch you, mark my words.
OP, how long has this girl been in a western country for?
I noticed something similar but different when dealing with Eastern Europeans. They have different approach and thought process the longer they have been in the US for example.