She should file a form 1040X, Amended Return, for tax year 2000. She can get the form and instructions online at
www.irs.com. On it she will end up raising her taxable income for that year by the amount she originally deducted. The IRS does not want 1040X filers to figure any penalty on the form, as they will figure it out themselves and send a bill. Having seen many amended return filed, my opinion is that they won't even blink at this one, and there will probably not be any penalty.
As far as the Roth IRA she currently has, she is stuck with it. She can take the money out, but earnings would be taxed, and she would pay a 10% early withdrawal penalty on top of that. She would, however, be clear of her Roth IRA. I think she should leave it there, and simply open a new Traditional IRA. She still has 5 days to set one up for tax year 2001, or she could start one for 2002. Perhaps she is enticed by the tax deductibility of the regular IRA, but there are few circumstances where they make more sense than a Roth IRA. I think her "mistake" is probably the way she really should be going.