Yes if your father provides over half of your support, which may be difficult with you making $30K a year.
If your father does not provide over half of your support, then you claim yourself. The 1098T goes on the return for whoever gets to claim you.
She must be younger than 19, or 24 if she's a full-time student, and she must live with you for more than half the year. There's no limit to how much she can earn and still qualify as your dependent, as long as she meets these other criteria. What she does with her income matters a great deal, however.
Note: while at school full time you are considered to be living at home for tax purposes.
Support TestYour qualifying child cannot use her income to pay for more than half her own support.
