Life of David Gale ending??

I dont mind someone spoiling the ending for me, so here goes!

Someone please explain this ending to me(with the last video tape), what was that saying?? He was there? He really killed her , what?

Also what was the deal with the suitcase and money , sent to those european family??

I started watching this movie , way too far into it!!

Spoiler:
the video tape is just to show that gale knew that the woman killed herself and that he was part of the whole plan (execute someone who´s innocent to prove the system doesn´t work) and to "cure" kate winslets guilty conscience (cause she wasn´t there in time to save him) . the money is for his ex-wife and child and the postcard proves to her that gale was not a rapist but that the "student" tricked him..

that movie rocked

Well heres a couple of questions:

1) What student's trick??
2) Where did all the money come from?
3) How did He know that Kate W. wouldnt make it in time ??

THanks!

1) near the beginning he gets it on with that girl Berlin in the bathroom at the party. Then she accuses him of rape
2) the money was the agreed pay for him to do the interview with Kate Winslet
3) they had it all timed. that's why the cowboy hat guy sees her running and just lets her go.