Send package via fedex to visa office. You only have to pay the one waycourier fee to return the passport This can’t be paid online you have to physically go to the bank and wire it to the scotia bank details given on the website.
BANK ACCOUNT BENEFICIARY: DHL Trinidad and Tobago Limited
BANK NAME: Scotiabank Trinidad and Tobago Limited
BANK BRANCH ADDRESS: 56-58 Richmond Street, Port of Spain
BANK BRANCH: 74815
ACCOUNT TYPE: Local Currency (Savings/Deposit - TTD$)
ACCOUNT NO: 1211252
ABA OR SWIFT CODE: NOSCTTPS
TRANSIT NO: 74815
Since your spouse already gave biometrics you only have to pay this fee that is on the VAC website.
https://www.vfsglobal.ca/Canada/Trinidad-and-Tobago/Service_and_Service_Charge.html
the website is really confusing. I literally had to mail them over and over to clarify how to pay and what to pay etc. hope this helps.