Bella is a fallen angel( or a regular angel)

visits jasper (human) in his sleep when he was a boy and continued to until he was turned into a vampire. ( braking the rules- not allowed to touch)

she wore all white and at some point her and jasper fell in love and broke all the rules.

she is friends with peter who was also an angel

i think jasper was a fallen angel and they were together in heaven but I'm not sure

bella is a warrior angel or something like that

i don't think this is going to help but i really need to find this story again!

thanks!