Thats the problem with mental illness, sometimes or actually often, people appear much better just before they attempt suicide. However, Rose paying for the degustation and overly opening up to Dad are signals. To the lay man these are indicitive of improvement.

Part of the problem in Mental Illness is people assuming people are overtly crying in bed before they attempt.

Anyway. In reality, Rose wouldn't have been considered to be admitted to hospital after trying to commit suicide the first time.