Unless you are self-employed, what you earned last year is not important. What did you submit to show your CURRENT income?
BTW, 60 is still a spring chicken in my book. Her age will not be a factor.
You have no case. You already said "No abuse"......the facts are that you must adjust status through your K-1 petitioner....and you can't legally work without authorization. Your legal avenues to stay in the US are very, very limited...
If the petition is still at USCIS, you should contact them (USCIS) to withdraw. You can't contact NVC until you have a DOS case number.
How to Legally Withdraw Sponsorship of a Family Green Card Application | Immigration Law Center | Justia
The bank should be able to tell you if the cashier check has been deposited into USCIS. 2 weeks after mailing is too early to be worried. It could be another 2 weeks before receiving anything.
That is a data driven timeline list. You don't have a VJ timeline, and your profile says EB-2. Fill in your timeline and change your profile.....then you should appear in that list.