It's funny that no one has yet proposed the theory of Seymour as a Lena's biological father. She never saw him, even little photo, Her mother didn't tell her anything about him. And then Seymour is coming out of the blue. He's not just some the sugar daddy, he is THE DADDY, literally. Thats why he is so interested in her, thats why she would work for him, one way or another. Its not like "he does not know the word NO".
It could be so obvious, but goddamn!!! Her Mom has those sky blue eyes too, like Seymour and Lena (and Axel, i know, i know) have. It's just a theory, but hey, what a twist it may be,