I think country of residents is the country she lives permanently, but I if she needs bio-metric she needs to go to USA and does it there and also in question 9 she needs to puts USA, IF her TRV already expired but she has Status she doesn`t need a TRV to re-enter Canada if she just go to the USA.
When the Visa approved you just simply need to send it to USA and then they will returned the passport to Canada.
this is the law:
Re-entry to Canada with Original Temporary Resident Visa (TRV)
Generally, a new single-entry Temporary Resident Visa (TRV) or a multiple-entry TRV is necessary to re-enter Canada as a visitor, student or worker.
As an exception, you can ask to re-enter Canada with your original TRV, even if it is expired, if:
You will only visit the U.S.* or St. Pierre and Miquelon and will return to Canada before the end of your authorized stay.
An officer will ask you questions to make sure you meet all of the requirements before allowing you to re-enter Canada. If you visit any country other than those listed above, you will need a new TRV.
*Including its Territories and Possessions.