That doesn’t sound hard at all. Sending a message does not require transporting (another) human. Find someone half-sympathetic, talk to them, have a message sent back. No need to transport another human, no need to steal it, and used by original owner so lock is not an issue.
as soon as his own Time Turner was locked down in the first place, acquiring access to another one would have been the highest priority by far, and surely within his means (given that other Time Turners are only controlled by fellow students).
Kawoomba appears to be talking about Harry getting himself a backup Time-Turner, not merely using one to send a message.
That doesn’t sound hard at all. Sending a message does not require transporting (another) human. Find someone half-sympathetic, talk to them, have a message sent back. No need to transport another human, no need to steal it, and used by original owner so lock is not an issue.
You misunderstand.
Kawoomba appears to be talking about Harry getting himself a backup Time-Turner, not merely using one to send a message.