Incomplete/denied application

[newacct]

Need advice. Family based green card.
11/05/19- initial application i 485 and I-130 online application
12/19/19- Denial as i-130 application or receipt was not attached. Sent back entire I 485 application.
12/20/19- Sent i-130 receipt with previously submitted I-485 application with new check.
01/03/2020- Denial as the check with incorrect payee name.
1/03/2020- Sent back i-485 + I-130 Receipt and the correct check.

Currently her 6 months visitors expired on January 2nd, 2020.
Should she continue to stay here or go back to home country as she is out of status?
If she does stay whats the impact on the application or during interview?

Yes she can stay. There is no impact. On the other hand, if she leaves, the I-485 is abandoned.