I'm sorry I am not sure what sort of dessert you are talking about but I thought I would respond to you as I see that no-one else has.
I'm sure you will be fine. Frozen things do take AGES to defrost and although it says "do not refreeze" it probably also says "thoroughly defrost".
Please do not worry I'm sure everything will be ok. Someone from the States might be more knowledgeable that me about this type of dessert and be able to offer you more helpful advice.
Stay well [img]smileys/smilies_01.gif[/img]
<font face=\"Arial, Helvetica, sans-serif\">Reach for the moon - even if you miss you\'ll be amongst the stars...</font>