Retirement tax questions

She is being knocked out of a deduction because for the 6 weeks she worked, had Retirement Plan checked on the w-2....and her MAGI was too high.  IRS publication says Roth and Traditional contribution limits are the same.  Therefore she cannot even contribute to a Roth. 2019 she will not be working, therefore she could take a spousal contribution for that year.   Any comments on this?