If it's hot and humid inside at your place leaving the wet clothes piled up
> overnight might cause them to smell musty.
Leaving wet clothes in the washing machine is also bad for the machine itself. It's better to promptly remove the clothes and then air out the machine.
Generally speaking, leaving wet clothes in a washing machine is not a good practice for many reasons. I sometimes do it myself, but I kick myself every time.
I would suggest the OP change her washing schedule. Wake up, get out of bed, start a load of wash, fix a cup of coffee, then run a comb across her head.