How do I get turbo tax standard better divide the tax deducted at source so I may get less return but my wife does not owe?

after splitting our income turbo tax split my tax deducted at source so that my wife ended up owing money to the provincial government.
the program shared the  Tax deducted at source as follows mine 9064.84 and hers 1,703.96. Any way to change that
so she owes nothing?