More than likely you won't be able to get any clear answer out of them so if I were you I wouldn't bother to call
At the end you never can see the status - if it was approved or rejected - you will only find out when the passport and documents are handed back to you fiancee...
And - in both cases (approved x rejected) she will have to go back to VFS to collect the application etc. anyway...
No worries, you will be OK