if her naps are always 1 hr, you can absolutely try w2s - than can be very effective for habitual wakings. When we did w2s, the first couple days, I'd just go in 15 min before I thought she'd wake, and I watched what happened as she woke up. Then I'd go in 10 min before, as I saw her start to wake, I'd place my hands on her arms and legs, if she kept waking, I'd start shhhhhhhing, if she kept waking, I'd start patting......and if she woke all the way, I'd try pat/shh or pu/pd to extend (but only for maybe 20 min), then I'd just get her up.
I only had success about 50% of the time, but it was still enough, and by 2 weeks later, she was doing it on her own. So it is a bit of trial and error, in terms of intervening at the right moment and intervening the right amount, but it does work.
hth
michelle