What to do with Traditional IRA funds when over the income limit?

So I gave my wife some bad advice. Earlier this year, we had $1,000 that we wanted to invest in a retirement account in her name. We looked at either a Roth IRA or a Traditional IRA, and a Traditional seemed to make more sense. We are in the US now, but she is from a different country (one that doesn’t allow Roth to be taken out tax free at retirement) and we may end up retiring there. So we decided on a Traditional IRA with Fidelity.

Well, I failed to consider the income limits for contributing to a Traditional IRA and we are above the limit (married filing jointly). We are kicking ourselves a bit because she has a good 457 retirement plan at her job (which she has since started contributing to). As I understand, this means the contribution isn’t tax deferred, but it will grow tax-deferred. Maybe not a huge deal since it’s only $1,000? But we’d like to optimize our tax advantages if possible.

I understand a Backdoor Roth IRA is an option, but we’d like to avoid that given the issue about possibly retiring in a different country. But maybe that would still be the best option for tax advantages? Or another option: would rolling over the $1,000 to her 457 plan mean the contribution is tax deferred, or would it be basically the same situation as leaving it in the Fidelity Traditional IRA?