A bitter cold draft blows in the long tunnel leading out. The tunnel looks freshly dug by a bulette. The temperature drops the further down she goes and leads her to understand this is indeed a way out, however, as we know, the mine was sealed by the watcher's barrier. The sound of scratching and chuffing leads her to believe a bulette is right now attempting to dig its way around the barrier. Any sudden significant vibrations will alert it.
This way is certainly not clear, so she heads back to the seal where twisted scraps that were once part of that seal are strewn about along with chunks of rock that filled that tunnel.
She notes three sleeping stirges (vampiric birds) clinging to the ceiling, sleeping like bats, having probably found their way in from outside meaning this is indeed another exit before it was magically contained. Any loud noises will wake them and they will likely be hungry.

Alice is momentarily confused but again gets a strange intuition from that same familiar presence and is led Further back up this hall and a hidden door is revealed to her. Alice is compelled to open it...
A surprised Drow is kneeling by the bodies of two young woman. He turns to face Alice.

Though startled, he quickly regains composure and bows to Alice, "Ah, well I've clearly underestimated you... human? No that's not... hm. At any rate, have you decided to come to your senses and take my offer? Sorry, I wasn't more clear, we didn't need to meet face to face." He has no armor and is dressed in nobility garb. He doesn't seem to have any weapons either.

To her surprise, Alice sees two girls on the floor, both motionless.

Six cracked and splintered marble pillars line the walls of this hall. A nine-foot-tall statue of a dwarf seated on a throne, a mighty stone warhammer across his lap, occupies the north end. Large emeralds gleam in his eyes.

Two bugbears stand as the situation drags on moment my moment. They stand to flank the drow. He glances back at the TWO girls and back to Alice, "Somehow I don't think you will take my offer. It seems that I must deal with you myself. A pity it must end this way, I do really hate conflict, watching it anyway."
Suddenly a flash of light blinds Alice and a moment later he's gone. His laughter echoes through the room, he's clearly still here.