Wow Yoda I don't know. I found a dead snake in my closet and it had me worried for weeks afterwards
If it was me I'd have more than a lantern and the search would not end til that snake was found. If it isn't venomous, and chances are it isn't, you're okay. I wish I could help but all I can do is wish you luck!
Oh BTW you can find very powerful flashlights on ebay dirt cheap. 1000 to 2000 lumen lights + 18650/28650 battery + charger for about 10 bucks. You'd be amazed how bright they are. There would be no dark corners They would blind you if you shined one in your eyes.
Me, I'd start closest to the door and begin pulling clothes/towels out. Carefully