In reply to neil9216: As others have mentioned for 250 Bahts the Chiang Main Rock Climbing Adventures people will deliver you to and from the crag, give you lunch and as much fresh water you can drink - I was there last July and had three great days climbing with complete strangers, all accessed through their amenable notice board. Not sure if I should mention the Snake I met, fortunately I was struggling up 6a+, whilst it was happily ascending the 7a to the left - it didn't bother me and I didn't bother it.
The CMCRA are within the city wall in Chiang Mai, on the south east side ab
Hope your girlfriend enjoys tending the Ma Wats (Thai people tend to dump unwanted dogs at temples).