I do not understand some of this film. The character Ink is meant to be the father of the child. Though, the father is awake and living in reality. How can he be in the dream world and in reality at the same time?
*spoiler* (Which you should have put as well but, hey)
It's described by the storyteller. She says that Ink has committed suicide. She later says that this isn't who he was but who he might be and she says that time doesn't work for them as same as for the real world ("for me a day is as a thousand years and a thousand years is a day" - incidentally this is also said by God in the Bible so... interesting). Also bear in mind that the Dreamworld is mental/spiritual and that the last scene happens while the father is struggling with emotions sitting at his hospital bed. Ink is who the father would become if he didn't change and confront his grief. The father who holds onto his pride and hides his grief and ends up committing suicide because of it.
I think the best thing you can do is watch it again. I think you understand it better the more you watch it.
The only thing I haven't got yet is why he's called 'Ink'.
I will have to watch the film again. I do not understand how there is a scene where the actual person, who is meant to be ink, comments suicide in one shot then is alive in the next? Is that a premonition?