A person divorces in 2020. Based on their 2019 MFJ return they were not entitled to EIP2. In 2020, filing single, she is. Do I claim the Recovery Rebate ($600)?

A further pressing the limit...married they received $1200 for EIP1 which was split evenly. In effect she received only $600 when she would have been entitled to $1200 based on 2020 income. How aggressive would it be to claim $600 for Rebate Recovery for EIP1?