In this section, about your state refund, enter only your wife's information. That seems to be what you started to do, which is correct. Just continue that way. When it says "you" or "your" it means your wife. When it asks for information from "your 2018 tax return" enter the information from your wife's 2018 tax return. If it brings up any information that it transferred from your own 2018 tax return, delete it or replace it with the information from your wife's 2018 tax return.
Since you took the standard deduction for 2018, you do not have to enter the amount of your own 2018 state refund at all. Just enter your wife's 2018 state refund. Answer all the questions in this section about her refund and her 2018 tax return.
