Hi Kay,

I have only read the initial intro. text and haven't done the actual exercise.

"suer" relates to becoming too warm or emotion / physical effort. These may well be experienced by ladies selecting a new outfit.

Later on, a necklace is offered to be lent which does not necessarily imply a mild sweat, it could have been an unexpected event that "transpired".

I'm speculating, but maybe this is the context in which "transpirer" is used?

Jim