Vianna,
Here's another one that might interest you:
http://thesylvangallery.com/Artist/L...yser-Smith.htm
I think there's a substantial audience for this kind of "psychological portraiture". It has a different sensibility than the traditional commissioned type of portrait that gives it a broader appeal.
I saw your comment on your other post (I love that one too) that the mom preferred to have paintings with smiles. Well, if your models won't cooperate, I don't know what you can do about that; but in the meantime you're building a nice portfolio.
There's also quite a bit of information here on the forum if you're considering commercial gallery type sales. Also check out the long thread in the Cafe section on "When Is A Portrait Not A Portrait".
Whichever way your heading, you've got grounds for optimism.