Ulmo shows up an hour into the frantic operation. He's alone. So they didn't realize what was going on, they must have noticed something amiss in Alqualonde but not guessed what, or they'd have come in force - 

Ulmo's form is frighteningly and distinctly inhuman; the speed, and the effortless change in direction as he arrives at the shuttleport; tell her fairy, but he doesn't look like the fairies of her world. He looks at her, then sends a rock flying at Maitimo at a good approximation of the speed of light -

There is a titanium wall between Maitimo and the rock and now Ulmo is encased in layers of every material she can think of as being difficult to get out of in the split-second it takes her to do that.

I counsel you, he says from within the rock, not to pursue this reckless and futile course. You will meet your deaths in Endore, pointlessly.

Ah, but does he keep trying to kill Maitimo, is the real question.

He is a fairy; he does not have a useful way of getting out of that very quickly. He can move things at where Maitimo was standing when he last saw him; he doesn't do that, not desiring collateral damage.

Oh, good. Never having encased a fairy in miscellaneous solids before she couldn't be sure he couldn't just make all the bits fly away from himself at high speed.

Well, for whatever reason it takes him a few minutes. Only a few minutes, though, and they they start flying loose.

Re-encasing him every few minutes is sustainable.

He does get faster at it. 

She can encase him in thicker layers.

And then sirens start from somewhere in Alqualonde. The shuttleport lights start flashing. 

How bad is that?

I assume someone woke up. Or didn't sleep. Or happened to have a daeva summoned at the moment - thirty minutes more, that's all we need -

Will it help if the siren is destroyed, that's probably illegal so I can't do it but I think Edie can still spare the attention span from entombing the fairy.

I think the sirens are a announcement, not the problem in themselves - I'll break your bindings on the same conditions, if you like, emigrating is illegal in itself at this point -

"I swear to uphold every oath my sister made as though I had made it."

And now there's a loose angel on Arda. He usually would not bet on his ability to assess character with daeva, but they seem like people -

Emily starts clearing up the rubble made by the fairy continuously escaping and her sister continuously re-imprisoning him and helps with the imprisoning thing as best she can.

Great. Last set of shuttles -

And the other Valar show up.

Five shuttles fall out of the sky as fast as Manwe, gliding serenely in, can move them.

Can he also be imprisoned. Actually, all of them.

Sure but the instant they realize you're in play everything within thirty meters of you is dead - he is, obviously, no longer within thirty meters of them, he's in the crowd milling on the other side, he's not an idiot - and possibly when they realize you're unbound everyone in the city is -

Why didn't Ulmo do that then?

He would find it objectionable. He's not evil. Damn it. Do it anyway, if you can hit them all at once and keep them down a minute or so, and then I'll tell them I'm the summoner and halfway to orbit and swear never to break Valinor's peace again -

Titanium diamond tungsten that stuff spiderweb is made of--

Some of the shuttles make it out, some go down, seems like the Valar are striking blindly - but by now they can coordinate moving stuff clear for each other -

- and make us a shuttle -