The Sure Cure
I did brace her with one hand, but my daughter is remarkably agile and well-balanced.
What I had done in the first place, in the park, was to pull down her trousers and put her up there on the low wire fence post. Anyone—and there were many on the pathway—could pay her mind while she obediently squatted to urinate.
In future, this cynosure will stand her in good stead. In the present, she hardly needs my help.