how bout beautiful nepali paintings ,or something sovinour from nepal.just something which represents nepal .which she can remember forever when she look at it.just my idea.

Pashminas are overated (the market here is inundated with cheap Chinese knock-offs that apparently say "hand made in Nepal").  Listen, if she is a working professional, then go for something exclusive like tea.  I gave that to my boss during my intern years and she loved it (a big-wig at one of the major IBs), she still sends me holiday greetings every year (probably expecting something exotic again) and has been inviting me to her holiday party every year.  Also, make an exclusive/high-end story behind the box like I did:  eg: My tea box was a gift from the late king to my father.  To make it more authentic and appealing, make sure you buy one where the packaging on the tea is similar to something we normally see for high end-chocolates.  It should specifically say that it is "among" or "the finest tea in the World" and is should be in an antiquated wooden box to make it look original.  Since I gave the same years ago, I still can't remember the exact name of that brand of tea but I vaguely know that it was produced in the tea estates of Western Nepal  and could be found in many a high-end tea stores in and around Thamel.  All the best and hope you get laid!!

Guys,

 Of course she is a female.Is Pashmina really a good gift?I want some thing typical Nepali.I mean not clothes which fades after some time.Paintings can be a good idea...but what kind of paintings?Thnaks for the response guys and wanna some more......

Can  u share me an idea how to buy?I mean good site.........

Thankas are the bomb...Get her the high-quality "gold" painted ones instead of any common replica out there.  Also depends which deity you would be choosing.  For me, I'd prefer Milarepa or the Medicine Buddha (where you could also provide a rich story behind their lives).

Below is the link to get these.  However, you'd end up paying half if you had someone ship it over from Nepal instead:

http://www.thangkapaintings.com/

Silver jewelleries made in Nepal, Small woodcrafts, Nepali dolls...........