I have 4 kids aged 19 to 25 that all share a crf230. They are all new riders and just love that bike....
Having said that my 19 year old daughter (5'3", 130#) does quite well on that bike. Yes, in the beginning, I had to pick up her bike a few times. Now I can't remember the last time I had to do this... The point is, the better she gets, the less likely she will need lifting help. She loves that bike and loves to ride. Period...
Just another point. I rode that bike one day with my dirt bike buddies on a sandy, whoopy trail. I usually blow their doors off, with my 2 stroker, and I still could with that bike and I had a gas. The ride was rougher (less suspension), but I was still able to go wide open over the moderate whoops. I think this is a great starter bike that will keep her happy for a long time...