Can she authorize someone , who has US tourist visa to sell her house?

Yes, a person on a valid B2 visa may have authority to sell a house via power of attorney.

Form I-130 Petitioner's 'Date of Admission'?

Only people who are in the US currently have a date of admission.

No, late filed taxes, with good reason will not affect your naturalization. Consider retaining an experienced immigration attorney to advocate for...

Can i fix my partner papers if we get married at the at of 18?

You can get married in person and then apply for a spousal visa.

Use the form currently available on the USCIS website.

You can travel as long as you have a valid H-4 visa.

No, it is not legal for an employer to ask you for money.

The plea agreement will remain on your record. You should privately consult with an immigration attorney who is experienced in "crimmigration", to...

The answer should be No, in this situation.

You should not have accepted employment. Having said that, consider privately consulting with an experienced immigration attorney.