you can talk...
Loremare, better to try a more modern formula which will dry quickly...what sort of range are you using at present? Modern nail varnish doesn't usually need to be shaken (I think people's shaking habits go back to the time when there were tiny ball bearings in the bottom of the bottle).
A good modern nail varnish will only need one layer.
Even if your wife is youngish then she'll have seen her family relatives shaking the bottle in previous generations.
Don't plunge the nails into cold water as it may set the varnish into strange ridged formations.
Happy New Year to you and may your nails be ever beautiful...