Has anyone seen the movie: Rule of Three? (2008 release)

(Possible spoiler assuming you ever plan on seeing this movie)
We just finished watching this low budget movie on Netflix called the Rule of Three. For the production value, it was intriguing enough to make it to the end, but we are a little confused and have been having trouble finding any discussion about this movie elsewhere.

If anyone has seen this movie could you post your thoughts on what happened in the end?

We get that the dad was his daughter’s ‘special friend’, but what happened to his daughter? Who sent the package? Why do they care? It seems a little implausible that the sender was either of the two men from earlier in the movie. Your thoughts?