Limited IRA Deduction Due to Spouse Covered by Employee Retirement Plan Contributions

We are married filling jointly.  Our combined MGI is less than $120,000 but my wife’s 2023 contribution of $7500 (we are both in our 70s and both contributed $7500 in 2023) is being limited to $1880 due to her employee retirement contribution to her retirement plan in 2023 (of only $32.00). I can’t understand the reason. Can someone please enlighten me?  Thanks.