Client Age 70, has contributed to a Roth IRA for 10 years

Now client wants to do some conversion of IRA balances into Roth IRA.

Therefore meeting both 5 year rule for Roth IRA and past 59.5.

Is it correct she could convert funds today and/or future that any converted amounts and also earnings would be considered tax and penalty free?  Or is there any 5 year clock rule that pertains to the Roth conversions today and/or future?

Thanks