Hello,
It is important that YOU also ask if you are unsure about things. If you don't, everyone will think that you are doing the right thing and that you know it.
If you knew that she was assessing you, would that have mattered? I would have thought we are all doing our best all the time?
It doesn't mean we never do wrong, but we should try all the time to do things correctly.
If it was just small matters of routine or so that you did do correct but not as "they" do it, it won't be a big thing, will it?
Just talk to them and tell if you are unsure about things, if you are.Also, don't forget about asking for help ...I'm sure they will help!