I had a lot of questions. . . but I'll just go for one now. .
SPOILERS*******
The priest at the funerals which all took place while Sonia was in a coma. . . was that Sonia's father? He looked very much like the man who answered the phone when Sonia called her father towards the end of the film.
It was her father. In her coma state, she projected her father in to that of the priest. If you recall, she crossed her father 12 years prior, and her father considered her 'dead' to him. That's why he said the name "Sonia" at the funeral in her coma/dream. Also Priests are referred to as 'Father', which is another use of symbolism. Great movie, and I don't understand why the few posters on here that are commnenting did not enjoy it.