Do not import last year's tax return into this year's if there is a change of marital status. This will give you the option to not claim a spousal amount in your situation.
The CRA does require you to enter a Net Income for their "spouse" and advises you to estimate their net income- the only reason for this is that way your daughter will not need to pay back a refund she may have received that she may not have been entitled to receive.
You can contact the CRA for advice on what you should enter as Net Income at 1-800-959-8281
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