I'm not so sure. It is one out of a series of paintings of a type of flower called the Jack In The Pulpit. If you see a picture of the flower you can sort of see what she was going for.
File:Jack in the pupit.jpg - Wikipedia, the free encyclopedia
Okay, that is the most Freudian looking plant I've ever seen But yes I suppose the picture looks more like that than, say, a daisy.