Half an hour to resettle isn't bad at all - that's actually good for starting! It's still the same nap as she hasn't had enough A time to be classed as A time and she has gone back to sleep - that's great, well done!
If she is standing up try not to lie her down but get her to lie down herself, pat the mattress, use your voice - chose a set phrase and repeat it over and over so she is getting the message but you aren't engaging with her, so something like "lie down now, it's just time for sleep". If she isn't crying or upset you can leave her to it, she may resettle herself. Listen out for her and only go to her to help her settle if you can hear an "I need you cry".
Was she actually stirring when you put your hand on her? How long had she been asleep at that point?
How much family support do you have - can anyone have her for a night so you can catch up on some sleep?
Laura