My kid is in India with PIO but the date expired, how to renew now?

Hello Sir/Madam,
My daughter (born in 2002) entered in India from USA in 2003 with PIO card. Since then she is in India with her parents. Holing updated US passport up to date. I just noticed that the PIO card expiry date was Feb-2018, that was my fault I didn't notice. Now what is next, Shall I go and apply OCI card? If so, how the gap from Feb-2018 till today will be treated? Will this gap be treated as overstay? Or is there any other workaround? Appreciated your valuable suggestions.
Thanks you