Since she's 5'2", and has spent a few years on a CR80, I think the CRF150R would be perfect for her. I rode one this past weekend (well it was a CRF150R frame with a CRF250R motor.... Service Honda's JR creation, sweet bike), but yeah, the bike was a lot of fun! It wasn't too heavy, I think it's only maybe 20 lbs. more than the CR80. And starting shouln't be too big of a deal, the new four-strokes aren't that hard to start, as long as the valves are in proper adjustment. But the four-stroke motor is much smoother than the on/off 80cc 2-stroke, which makes it easier to ride and lug around. I'd consider one for sure. I race MX, and 250F's, but if I raced hare scrambles or rode a lot of woods, the CRF150R (or Service Honda's JR) would probably be my bike choice, the expert model (2" bigger tires, I'm 5'5"). Nothing weenie about the CRF150R.