The trick of knowing how to send Patronuses to others as messengers has been implied to be kept in Dumbledore’s close circle, as a tactical advantage. (e.g. Quirrel mentioning the possibility of Dumbledore teaching Harry this trick—not as if it’s public knowledge)
Harry & Draco have learnt to send Patronus messages. With the goal of preserving Hermione unbroken while working towards her exoneration, Harry could
Arrange teaching of sending messages to any Patronus wielders in SPHEW/Sunshine or anyone else willing to help Hermione
** will confirm whether it is possible to maintain a Patronus at a distance for long periods
Arrange teaching of Patronus to those willing to help who don’t know it.
Given the Cloak & Harry’s Patronus hide those protected from Dementors, research Rituals/Potions to confer that
** An aim of Quirrel’s?
Enlist help in finding evidence for Hermione’s memory charming (Daphne noting she missed the Sunshine army council of war in 79).
As far as I know we have no indication that Lucius is capable of casting the Patronus Charm at all. Or are you referring to the scene where Harry teaches Draco how to send messages with it?
“That reminds me,” said Harry after a while. “Can we test my hypothesis about how to use a Patronus to send messages?” [...]
The trick—or so Harry hypothesized—was wanting to spread the good news, wanting the recipient to know the truth of whatever happy thought you’d used to cast the Patronus Charm. Only instead of telling the recipient in words, the Patronus itself was the message. By wanting them to see that, the Patronus would go to them.
The trick of knowing how to send Patronuses to others as messengers has been implied to be kept in Dumbledore’s close circle, as a tactical advantage. (e.g. Quirrel mentioning the possibility of Dumbledore teaching Harry this trick—not as if it’s public knowledge)
Harry & Draco have learnt to send Patronus messages. With the goal of preserving Hermione unbroken while working towards her exoneration, Harry could
Arrange teaching of sending messages to any Patronus wielders in SPHEW/Sunshine or anyone else willing to help Hermione ** will confirm whether it is possible to maintain a Patronus at a distance for long periods
Arrange teaching of Patronus to those willing to help who don’t know it.
Given the Cloak & Harry’s Patronus hide those protected from Dementors, research Rituals/Potions to confer that ** An aim of Quirrel’s?
Enlist help in finding evidence for Hermione’s memory charming (Daphne noting she missed the Sunshine army council of war in 79).
Actually Malfoy sends his to Harry with a message.
As far as I know we have no indication that Lucius is capable of casting the Patronus Charm at all. Or are you referring to the scene where Harry teaches Draco how to send messages with it?
The latter. Wait why would Harry teach Draco a secret trick belonging to Dumbledore’s close circle?
He just came up with the idea independently.
Or at least he saw that it could be done and independently came up with how.