Trade Large bike for small one.

About 6 months ago I bought a Trek 4300 to get into the sport. It worked and now I have a sweet new Full Suspension. But now my wife wants to ride (I'm stoked) and the 4300 is too big for her. She is 5' 3.

The Trek has almost new Panaracer Fire XC tires ( a few rides on them), some carbon flat bars, and a carbon bottle cage. It has scratches on it but no dents or real damage. It is the blue and silver one, I can e-mail pictures, and I have the paperwork saying when I bought it and everything. The frame size is 19.5.

I'm really just looking to trade for a bike that is similar in quality that will fit her. If you have a frame and want to sell it I'll consider that, but I dont know how to swap headsets or BB's, so hopefully you do.

I live in Hemet but drive all over So. Cal everyday for work...

Also I have some surfboards that could maybe sweeten the deal?