Is 92/72 blood pressure normal for a 23 month old little girl?

blood pressure: It may be. It depends on what size cuff was used when the pressure was taken and what kind of instrument was used, electronic or otherwise.

Slightly high: It's slightly on a high site, but it also depends if she was quiet or crying, where it was taken ( upper or lower extremities). It usually takes several measurements in kids ( (3 at least) to see the more accurate one.