The silence may be uncomfortable, but it's marginally less so than the conversation, so Carlisle is happy to continue without another word to her until he's finished. When he steps back several minutes later, what he's produced is an ovoid array that covers most of the door, one surrounded by various arcs and sigils, each intricate detail required for the final effect. Some arcs house a sigil all to themselves; others are written still between the various lines, a script from which the spell will read.

After another moment to inspect his work, making sure every piece is where it ought to be, he stoops next to the bottom of the array and places a hand on the lowermost arc, and lets his energy flow into the glyph. It illuminates bit by bit, energy flowing into the lines like water through a channel until it touches itself on the other side. The glyph shines brightly for another second or two, then finally dims, leaving behind a faint glow that, too, fades.

Carlisle nods, apparently pleased, and turns back to her.

"Forgive me for finishing this before a proper introduction. My name is Carlisle Longinmouth, and this room should be safe from such threats for now."