This would be a case for a back-door Roth. Make a contribution to a traditional IRA (pre-tax or not) and immediately roll it over to a Roth. Voila!
Note that doing this you will lose the tax deduction benefit of your traditional contributions. You probably wouldn't qualify for pre-tax anyway, so make an after tax, traditional contribution. Your wife may qualify, but the rollover will make it taxable, anyway, so the two will negate each other.
Do the rollover as soon as you can; any gains you make on the traditional IRA will be taxable income on rollover.