IRAs are owned by an individual, so for you yourself to make a contribution to an IRA for 2019 (based on your wife's compensation since you have no 2019 compensation of your own) it would have to be to your IRA, not to your wife's IRA.
Given sufficient compensation, your wife is permitted to contribute to a traditional IRA, it may just not be a deductible contribution. That your contribution for 2019 would be deductible but your wife's would not be suggests that your 2019 modified AGI for the purpose is between $123,000 and $203,000.
