If bhairav would not have paid for her education, then i'm sure because of her hardwork she would have got fully funded scholarships for every step in her education, even her MBBS and MS.
As Bade papa had a donor ready to pay for her education (Bhairav), he did not go for other payment options for her. Bade papa would have helped her finding another donor/or help her win as many scholarships as she can.
I detest Gauri for what she is but she is talented, capable and hardworking in her professional life.
I am sure she will go places and succeed and earn a lot of money. She has to change her attitude in life.
My second view on this is again bhairav paid for her education and expenses. But what if she was lethargic and lazy and did not study hard? Ghode ko paani ke paas hum le jaa sakte hai, lekin paani peene ka kaam ghode ko khud karna padta hai.