W-2 income doesn't flow to the PA Gross Compensation Worksheet

Both my spouse and I had W2 income, although hers was only a few hundred dollars. Both of us earned all of the income in another state (CA). But only my income flowed into the PA Gross Income Worksheet, even though we are both full-year residents (and both indicated that in our Personal Worksheets).

 

Why doesn't my spouse's income appear in the PA return?