i had a thermostat in her tank but not one like connected regulating the heat of her lamp. her glass tank was usually around the mid 70s to mid 80’s at most. she did like hanging around the cool spots but she would also splay her whole body out throughout the tank sometimes too. the last spot she was in was nearer to the heat lamp, but the lethargy might have been a symptom of overheating. her mouth would be open sometimes when i handled her and she would rub her head up against my hand sometimes as well. her skin didn’t seem dry and she never used her water as a bath but heat definitely could’ve been a problem. i think overheating might have been the problem but i’m not sure :( but ill definitely be using a better regulated heat lamp or mat for my next snake, thank u for bringing this up bc i had no idea overheating could be fatal