You can take her to a child specialist and see whether she has any physical problem for which she is crying.If not so, she might have been feeling unsecure or lonely.As she is over 9 months now,give her healthy foods including soft dal-rice,chapati ,fruits like banana,apple, fig etc.,milk, baby food
.she should not stay hungry.
For her voice, give her a sweet ayu. powder Yashtimadhu,a pinch from time to time ,also give honey.
Take care of her,bye.