If you become a USC before your daughter turns 18, she will automatically become a USC. Otherwise you will need to apply for an immigrant petition...

Can a grandmother (green card holder) sponsor her grandchild 10 year older(B1/B2 holder) for citizenship or permanent resident?

No unfortunately there is no category available for grandparents to petition their grandchildren.

He can apply for a visitor visa or if you are engaged or married, apply for a fiancé visa or I130 petition to begin consular processing. It is best...

Additional evidence for I-751?

Yes you can submit additional evidence of the bona fide marriage but should send to appropriate service center using receipt information.

Error I-589 form

You can explain this error at the time of interview and it should not be an issue.

Can I work in USA with approved I-765 and I-131 without visa , while I-485 is pending?

You can remain in the US while your AOS is pending. You can also work on your EAD.

Misrepresenting that you are a USC has serious consequences. Consult with an attorney in private.

Is there anything I can do to save my DACA?

It is best to consult with a competent criminal defense attorney to handle the DUI.

How to prove us domicile?

You can show domicile through employment letters, pay stubs, tax return filings, bank accounts, residential leases or deeds, and school or hospital...

What is the legal status if green card is expired and haven't received I-751 receipt? Can I still work?

Yes you should still be able to work in the interim as you still have valid status if you filed prior to I751 expiration.