Can anyone tell me who is the author of this book called angel?

[Sandra L]

Well, this book is about this girl,ayala(..and da book is NOT Ayala's Angel) and when she was younger she could see angels.once when she was probably nine im pretty sure,her angel came and visited her and said he will come back when she was older cause she was too young to be a angel and she just sits next to her window everyday and da dad tries to stop her but she wont leave it so they send her to a crazy hospital then wen she was like 13 she woke from her looooong~~ angel dream and at da end she became a angel to help all da ppl cause in this book angels fly around hepin ppl andb4 that there was this girl who also believed in angels but ayala didnt want her cool image which she workd so hard for to go to waist but at da end they became friends(o and da popular girl named amy was da one who made ayala popular~~) pls tell me da author~~i foung da book in my school library last year and it was great it has a darkesh cover and theres a person with wings(prabably ayala or her angel,o and her angel died tryin to save his ppl..so sad T^T....)so plssss~~~