Just a note, normally I do the dice rolls and report the result. I don't mind if you use Invisible Castle as it saves me some work, but for the likes of Hide and Move Silently I prefer to do the rolls myself and leave them unreported. This also goes for other skills where the outcome is uncertain, usually including Appraise, Bluff, Decipher Script, Diplomacy, Disguise, Forgery, Knowledge, Listen, Search, Sense Motive, Sleight Of Hand, some Spellcraft and Spot.
As this is a non-hostile situation and the modifiers are so high anyway, I'll let it slide for this occassion.