I just got mine in HCMC, very easy process and takes 2 days. However, there are no more online appointments. They are moving to Evisa in October and the wait will be up to 30 days they have said. Hanoi has appointments so might try them. I have heard 3 days for Hanoi. Good luck.
If she got the visa already, why does she need to pick it up? Confused by that...I'm not being toxic, I am referring her to use the search function because she might find the answer faster.
I just searched and there are tons of posts and comments. You will read when you search that they take 3 days and will give you a slip to collect your visa.