~~ Do you say that she is Wiccan OR she is Wicca?
AWNSER: depends on the person, some may find it offensive and prefer witch or another name some dont want you knowing what they are.
~~ Wiccans worship a god and a goddess, sometimes even more gods and goddesses. Do they choose which Gods and Goddesses they worship, or do the worship JUST one particular type of God and Goddess (only worship Egyptian, Greek, Chinese, etc).
AWNSER: again, its up to the person, if you want to worship it then go ahead, wiccan is a very flexible religion
~~ Are you a teenager than is Wicca?
AWNSER: i am a catholic but im working on becoming a druid =)
~~ Do you know any Wiccans in your town? Do you have a group (what do you call that) of friends that are Wiccan (like a clan, cult. . .what do you call that?)
AWNSER: no i know a druid nearby who teaches me and i your a druid its called a Grove, if your a wiccain a gathering of a close knit group of people who practice magic are called a Coven and usually have their own book of shadows
~~ When did you decide that Wicca was for you?
AWNSER: im not a wiccain lol.. xD
~~ How can I make my character believable? She'll be having a few rituals, so how can I make those realistic?
AWNSER: um.. its good you want facts, describe them using very powerfull imagery thats all i can say on the matter. you should practice some small spells to start you off and explain what wicca is ect. most of the knowledge online on this matter is perfect. ill add sites you can read through and the bottom and certainly there are some free online pagan and wiccain courses. druidry online is free too but its harder to find the spells =)
~~ Have the spells that you have tried worked?
AWNSER: many xD. i tried wish spells, alot of incantions and some candle magic. all spells work in different ways, signs wont come right away you need to be patient with it. its not with a snap of your fingers, dont demand anything, ask nicely. you see it takes time to manifest. dont write your book where she automatically gets things as that would be a lie

no offence meant. i recommend a couple days meditation and visualiseation and relaxation before you do any spells, itll help you when your doing spells and you need to visualise things, helps you get used to useing your imagination especially when your old"
some interesting sites:
http://www.goodwiccan.com/
http://www.religioustolerance.org/witchcra.htm
http://www.boards.ie/vbulletin/showthread.php?t=211726
http://www.wicca.com/celtic/wicca/wicca.htm
http://paganwiccan.about.com/
try reading alot on wicca and maybe a little paganism. do alot of research before you put a pen to paper. its best to have the facts instead of just rambling on.
hope i helped <3