What are some cheap ways for and unaccompanied minor to travel to Seattle from New York?

My daughter wants to go visit her Uncle in Seattle, while I'm away on a business trip. However sending her as an unaccompanied minor on a plane is too expensive. I want to make sure that she gets there safely. She said it doesn't matter how long the trip is. Please help!What are some cheap ways for and unaccompanied minor to travel to Seattle from New York?
put her in a box and send it to the uncle person. Its much cheaper than bying plane tickets.
I realize that a flight is expensive, but it's also the only safe way. Flights have chaperones to look after unaccompanied minors....



The only other options I can think of are a bus service (i.e. Greyhound) or if there is a train that runs that route. Both aren't really safe means of travel for an unaccompanied minor, and I'm not sure if they even allow it.What are some cheap ways for and unaccompanied minor to travel to Seattle from New York?
the only ways I can think of is plane, trian, bus, taxi, or having a relative go with her in the car, like a road trip.



safe ways-

plane, road trip with relative or a family friend, preferably a girl so she feels more comfortable.



un safe ways-

train, bus, taxi
u did buy her that bicycle for christmas right?