She's sweet(, mate) Australia spoken language
Used to mean that everything will be fine and you don't need to worry
No matter what happens, she is sweet, mate.
I know you feel nervous. She is sweet, mate.
Lily: "I felt really nervous before the presentation." Jim: "She's sweet. You have tried so hard, it will certainly be great!"
Used to describe or evaluate that something is quite good or not bad
Used to indicate satisfaction or approval in a litotical manner
Used to describe something that is very fine, pleasing or excellent
Used to say that a performance, event, etc. will be successful despite poor preparations.
If you get a ticket, you get a fine for parking illegally, speeding, etc.
This expression dated back to 1964 in Summer's Tales written by Kylie Tennant.