"Did I sleep with someone?" She did not remember who brought her into the bedroom after she was at the border of the dark land. And it made her guess that maybe someone who had brought her to bed was someone who was in the bathroom.
She needs to confirm it from the available evidence. First she immediately looked beside her, there were no other pillows and the sheets still looked neat.
Feeling no sign that someone had slept with her, she continued the inspection by checking the dress she was wearing. Without waiting a second, she immediately opened her blanket with her left hand. She was immediately shocked by what she saw. Beneath the blanket, it turned out that she was only wearing underwear.
"W-where's my dress?!" She stammered knowing that the dress she was wearing earlier had been removed from her body and made her fall asleep in only her underwear.