No I do not leave overnight usually though I did put a small mealworm on a small saucer so it would not crawl out and burrow and it was still there in the morning but I have tried all different scenarios at least all that I could either think of or researched and was just putting it out there in case there was something I did not try or wasn't aware of is all and no she is not my first "T" but I am a newer owner of "Ts" so I am learning always will be learning but that's what it is to love this Hobby really isn't it. <3Are you leaving the feeder in over night? I have a few that won’t eat until everything is quiet and dark. Your little one looks fine otherwise. She’ll eat when she’s good and ready. Is this your first tarantula?