Looking good!
Looks like she could use the humidity higher to transpire better, but that's not too hard. I've been struggling to keep my young plants at 60-70% and 20-22c (68-72f) to keep them h appy myself.
What I do is use foliar. Particularly when I can't get it up into the right range in the chart, or even not -- slightly less frequently. 1ml/liter(4 liters to a gallon) calmag, very weak food, rooting supplement. Works wonders.
Doing well =)
http://www.just4growers.com/stream/temperature-humidity-and-c02/vapor-pressure-deficit-the-hidden-force-on-your-plants.aspx
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