iv been dying to know........ what is Bella's vampire power? if u don know... GUSSE!!

To elaborate thêm on what the poster above me said:
Bella is a shield. As a human, any vampire power that affected the mind (such as Edward's mind reading, hoặc Jane's illusion of pain) would not affect Bella. As a vampire, this ability is thêm prominent, and Bella is able to expand her shield to protect others around her as well. And as the poster above me mentioned, she is also able to temporarily disable her shield (though this is not easy for her) and allow her mind to be vulnerable to these other powers for a short period of time. And she does this to allow Edward to read her thoughts for the first time ever.

she has a "could say" a protecting sheild she can expand, in which other vamprictic powers cannot penertrate.
She uses it in the battle field in Breaking dawn to protect her new family.
ALONG with, she has the abilty to learn and use others powers, Zafrina was able to teach her how to perform her "pretty pictures" power.
She does it to Edward on thevery last page.

she is a VERY powerful vampire!
DONT MESS WITH THE CULLENS :p they have bells :P

Yeah, and another thing that could be considered as her power, is that even thought she is a newborn, she is perfectly capable to resist to human blood.It's easier for her to resist to killing humans than it is to any other newborn. Also, she wasn't thinking of blood all the time (like the other newborns).