The school year creates external structure — bells, deadlines, routines — that regulates an ADHD nervous system from the outside.
When summer hits and that structure vanishes, her brain doesn't suddenly learn to self-start. The container disappears, and so does the ability to begin.
'I'll do it later' means my brain can't generate the activation energy to start right now, and I'm hoping a future version of me will magically have it.
It's not laziness or defiance — it's a nervous system that needs the right conditions to initiate, and unstructured time rarely provides them.