OMG - pre-raphelite indeed. I think portraits by the pre-raphelites not common? (as opposed to paintings with models in of historical/mythical subjects). But I bet this one paid well.
She is the very vision of ideal well-heeled mother of a growing brood isn't she. Idealised or what. Paintings like this always make me remember what a terrible time most women had in the 19th century. Even the rich suffered infant mortality, TB epidemic, obstetric carnage and probably VD as well, judging by the amount of prostitution.
granny23 even in early family photos you will not see smiles. But that I think was for technical reasons - slow shutter speed on cameras - easier to keep still straight face than still smile.
But apart from the notable exception of Mona Lisa, smiles were not the fashion ever in portraits were they? Which is probably why they always went on and on about the ML smile.