Hello Mr Lightcz,

We not only your child but even u can take a one way ticket to fly Nepal. as your are not maintaining any Status a u mentioned that u r GC holder but if u take round trip for you and your wife it would be cheaper. as for your child, as she is US citizen she need to obtain Nepali VISA. which can be take here in Nepal Embassy in US or Port of Entry in Nepal which means Airport. i guess they give u 3 or 6 mtnhs Visa at first and you need to extend your childs visa for the futher stay in Nepal..

this is what i knew, i hope other sajha experts will be posting more over this subject..

regards