esther and kezia on a wooden horse

we went to see some friends today we haven’t seen for a number of years. we both have children that the others have never seen and those we did know as little babies are now approaching teenage years.
it was their daughter’s birthday and jane told esther it was her 9th birthday party. “oh”, said Esther, “but how old is she ?”
here is esther and kezia on a wooden rocking horse. note how kezia is standing on a beeny horse. i’m sure this is signifcant, but don’t know why.