Florida college student with job but still a resident of Wisconsin

My daughter is going to college in Florida. She is still a resident of Wisconsin and I have claimed her on my 2019 taxes as a dependent.  She just got her first job in Florida (February 2020).  Florida does not have state income tax, Wisconsin does.  How do I figure out how much should be withheld from her Florida paycheck to pay income taxes due for 2020 in Wisconsin?  I do not want her to owe a huge lump sum to Wisconsin when she files her 2020 tax return.

 

Also, will I be able to claim her as a dependent in 2020?  I am paying for her tuition/room & board.

 

Thanks.