Zeepa,

I dont see a point why would you make your brother come to Delhi to pick her up. She will be just fine once she reaches Delhi. She will need some help before Delhi and I hope she will find someone from Nepal travelling the same route before Delhi. Tell the flight representative that she need some help (they will write it down on their note). Print the itinerary and give a copy to her and tell her to show it to the flight attendant at New Delhi but I think she will be just fine. My mom used the Bahrain route before by herself and she found a whole gang of Nepalese travellers on plane which helped her out. I know you're little worried but it will work out man.