Saint Teresa, as the Roman Rota attests, never fell into any mortal sin; but still Our Lord showed her the place prepared for her in Hell; not because she deserved Hell, but because, had she not risen from the state of lukewarmness in which she lived, she would in the end have lost the grace of God and been damned.
Alphonsus LiguoriIt often happens that we pray God to deliver us from some dangerous temptation, and yet that God does not hear us, but permits the temptation to continue troubling us. In such a case, let us understand that God permits even this for our greater good.
Alphonsus Liguori