Thanks, Astrea. I think I had 'rapidly' in at one time, but it upset the rhythm of the sentence and also put the emphasis in the wrong place. At the moment, I've skipped the cooling process and the coffee is already cold, but that misses a nuance implied by 'cooling'. Gah! Think I'll make her drink it hot and hope she burns herself . . .
Gah! Think I'll make her drink it hot and hope she burns herself . . .
Lol!
Good solution from Alan - though I think in context I might well read "a cooling cup of tea" as you mean it, if the run-up to it had a sense of time passing in it, for example. It is, after all, the more direct meaning.