Solving the House Elf mystery

A couple of days ago, I posted some thoughts on House Elves. In particular, I wondered why our hero trio didn't summon Kreacher or perhaps Dobby while they were on the run in The Deathly Hallows.

Special thanks to reader WilliamBurr who pointed me in the right direction for the answer and confirmed my own thought that, somewhere in the book, J.K. had given explanation for their failure to use the House Elves to help them more.

WB has helped me locate a useful passage in Chapter 15 ("The Thief") of the seventh book. Harry, Hermione and Ron have just escaped the Ministry with the locket but, in getting rid of Yaxley, they've been forced to abandon Grimmauld Place and flee to the wilderness. In the process, Ron has gotten splinched.

J.K. writes: Harry "and Hermione had already decided against trying to summon [Kreacher]; what if someone from the Ministry came too? They could not count on elfish Apparition being free from the same flaw that had taken Yaxley to Grimmauld Place on the hem of Hermione's sleeve."

A helpful passage, to be sure, and yet more proof that Rowling really thought things through and covered all her bases when she planned and wrote these books. But is it a complete answer to my question?

I think it answers the question with regard to Kreacher for certain. They didn't summon him because to do so would risk bringing trouble directly to them. But what about Dobby? He was safe in Hogwarts' kitchen. Surely he was safe.

Here's my answer to that question: they couldn't summon Dobby because Dobby is a free Elf. Harry doesn't own him so he can't summon him.

The connection between House Elf and Master is such that it makes summoning possible: the Master simply says the name of the Elf and the Elf then apparates directly to the Master, no matter where he or she is and even if the Elf doesn't know where the Master is.

We see this happen at the start of Book Six when Dumbledore decides to find out if ownership of Grimmauld Place has truly passed to Harry by telling Harry to summon Kreacher. Harry says Kreacher's name and Kreacher appears, apparently against his own will.

So, for Harry to call Dobby, he would have to have some way to communicate with him directly and to tell Dobby where Harry is. When Harry, trapped in the cellar of Malfoy Manor, sees Aberforth's blue eye in Sirius' mirror, Harry tells Aberforth that he's in the cellar at Malfoy Manor. Aberforth communicates this information to Dobby and Dobby then apparates to Harry.

I think, based on this reasoning, that we have a complete answer to my question. Harry and Hermione decide it's too risky to summon Kreacher and they can't summon Dobby because Harry doesn't own him. It's only when Harry can communicate (through Aberforth) to Dobby his own location that Dobby can come to help him.

Cool. I like resolving mysteries. And thanks WB!