Why doesn't Bella want to marry Edward?

I have watched 4 Twilight movies 35 times! First of all, Bella really wants to become a vampire right away! Then you can be with Edward! But after becoming a vampire, you can no longer be with your family and the werewolf Jacob! Because vampires and werewolves are always mortal enemies! I don’t know if I can control it! And the desire to suck blood! Afraid of hurting my family! And he was not old enough at that time! Later in Part 4, Bella mentioned what her mother had said! I hate early marriage! As a result, in Part 4, Bella’s mother knew that her 18-year-old daughter was suddenly getting married! Not even angry! I started to blame my daughter for not telling me earlier! sweat! ! Basically these are the reasons~ I’m so satisfied with the hand-made results! Thank you