Yes they may remain while the petition is pending.

No not for the I485 applications and supporting applications.

Best to speak to a family law attorney regarding your daughter’s case.

No this is highly unlikely and appears to be a threat.

The I130 and I485 must be filed in a case like this.

Work with a Canadian immigration attorney to review your case.

Work with a traffic court lawyer to assist with resolution.

You should update the address to where you will currently reside and can also provide appropriate mailing address as well.

Your spouse may be eligible for adjustment of status. Consult with an attorney for guidance.

Yes you may despite their overstay as long as your parents entered with a visa. Consult with an attorney for guidance.