Isn't traveling fun Mendy. Nothing is cheap anymore. Sign of the times. My recent trip back to the see my daughters and Parents was about $6k. That is only because I stayed at my parents and cousins house and used my Mom's car while there. Had I not had those options available the trip would have easily been 2.5x more.
But in the end it can't be about the money. It's the experience your daughter gets, the time with family etc. Those are quite honestly priceless.
Enjoy your trek