How long have you done 1 nap for - if it's only been odd days I would try it again but be consistent with it and don't go back. If nights are bad anyway at the moment I don't think you have much to loose and with a good solid nap hopefully she will adapt to it and the nights will get better. If you know she has had a good rest in the day it may make the night training easier on you too.
{{HUGS}} though, you are making good progress which is FAB!!
Laura