1. Does Bella really understand all that she will give up in becoming immortal? Do you think her understanding is limited by her age, life experience, or something else?
I think this is a very tough question to answer because never will we be in a position to make such a decision. With that said, I do believe that Bella thought it through, however, contrary to popular belief, I'm not sure she understood it all. I mean, being with the one you love forever, would be wonderful; it's what we all say when we are in a relationship, but given the circumstances, I think it is more than that. It was only a little over a year's time, and she was only 18 (17 when she made the decision). I do think that she was going along with her heart, in that she wanted to be with Edward for eternity, but also, her age and lack of experience did play a part. I mean, realisticaly......they are undead, a monster, a creature, who's very nature is to kill. Period. The story makes for a beautiful that is very easy to fall into, but, one must think of the real consequences, and I don't believe she did.
2. What do you think Emmett and Jasper were going to do for Edward's bachelor party? Was Jasper telling the truth?
I do believe that Jasper was telling the truth. Even though Vampires are physical creatures, in the sense that they are comparable to animals and they hunt for a living, they are not physially minded except towards blood. Emmett has Rosalie, Jasper has Alice, Carlisle has Esme, and now Edward has Bella. After centuries, they have each found that one person who makes everything better..........are they really going to get any gratification out of a strip joint? I think not!
3. Tanya made a play for Edward long ago. We don't know much about Tanya, but we know quite a bit about Edward. Why do you think he turned her down?
Well, if Edward is as straight forward as we think he is, than he simply is more attracted to Brunettes. But, to attempt a more in depth answer, I would say that it was for the same reason why some people are just not attracted to others. And even when we find someone who is close to that person who was made for us, they still don't hold a candle to what we know is out there. I think that sense was stronger in Edward because he was a Vampire. I believe that if Edward was willing to just settle while he waited for Bella to be born or to come around, then he may have taken Tanya up on her advances, but he knew that Bella was coming, and he knew that she would be the most amazing thing out there, and the most beautiful. Why would anyone settle for less? ALso, his patience was a lot stronger as a Vampire.
4. About Immortal children. At what age or developmental stage would the Volturi allow them to be created? A two-year-old usually understands the word no, but evidently that wasn't enough. How would they determine if the child could "keep the secret"? What would the determining test(s) be?
This is a tough one too. I understand the female Vampire's want for children since they cannot have any, but I don't believe that any age younger than 15 would be acceptable to the Volturri. I feel that as a human there are phases that need to be gone through in order for the mind to develop correctly, and the Volturri are aware of this. Anyone younger than 15, has not yet developed the mental capacity of true adult thought. Meaning, comprehensive thinking. Think about it, how many 14 year olds are running around thinking their life is over because the boy they had a crush on, but never said a word to likes another girl? 15 even may be too young, but I think that at 15 you begin to see the world a bit more clearly and you start to have a much more profound and productive mindset.
"Trust in the Lord with all your heart, and lean not on your own understanding. In all your ways acknowledge Him and He will make your paths straight." ~ Proverbs 3:5-6