Why is turbotax ADDING $6300 to my granddaughters income instead of subtracting it . I did claim her again this year as she is in college .

I understand she wont get the $4050 exemption but still should get the single deduction of $6300  . Lets say she made $7000 last year she should have a deduction of $6300 leaving her with a taxable amount of $700 . Turbo tax is ADDING the $6300 giving her a taxable amount of $13300 . WHY? I have never had any issues with claiming her before or her with filing her taxes . I know she has a reduced amount she will get back by my claiming her her but I have never seen this before . She is now in college and is 19 but I dont see how that would affect  her $6300 deduction . Would appreciate all the answers I can get as this could be very costly .