My boss takes 75.00 a week out of my check, do I multiply that times 52 weeks to get the amount she owes me?
Multiplying the amount she takes out of your pay by 52 will give you the amount of money she owes you. This will bring the number to $3900 if you were present at work for all the days.
Why does she take your money?
That's a good estimate but I would find out why he is taking it.