They have to convict them of murder or manslaughter as appropriate, frequently enough that the conviction rate passes external scrutiny. If their penalty for murder is a day or two in lockup then that's fine, some species don't really go in on punitive handling of crimes.

...they do have disparate handling of murder and manslaughter of different castes.

Countries with real penalties get to go first. But that is, legally speaking, adequate, and eventually they'll get their turn.

No one is inspired by having to wait a bit longer to prosecute clean citizens more aggressively.

Maybe in a hundred years they'll be ashamed of themselves. 

He pays attention when Tapa gets to Peka's neighborhood.

Outwardly it's a very normal red neighborhood. Everybody presents themselves for cleaning. Peka has beads in her hair.

They get morph instructions and babies get tapped and cleanable possessions can go here for cleaning and they can read up on places they might want to live.

Peka and her family want to live in Ambarona!

There is a shuttle right over there!

She'll meet them there. She scoops up Katin and -

- keys are mysteriously not working.

...they go to Ambarona anyway.

Ambaróna is pleased to meet them and has little bracelets that do currency and emergency services.

Do her keys work here?

They do!

Great. She goes to her apartment and attempts to learn its address.

The nearest subway stop is Palace and there's an elevator directly from the subway stop to her building.

Do the keys put her back where her family is if she squeezes them again?

Inconveniently, no, they take her back to the nondescript valley that she would pass through apartment-visiting from Tapa.

Well, she'll have to figure out the long way, then.

There are helpful resettlement people around to get her family to whatever housing arrangements they have set up or help them make arrangements if needed.

Are they going to be confused about Peka already having a place?

If they are surprised that Peka already owns a five-bedroom luxury apartment in the most expensive neighborhood in the most expensive city on the sixteenth-most-expensive planet in the multiverse they mostly hide it. 

On Peka's pillow there are concert tickets.

Oooh, how many?

Five (and a note that says 'babies welcome + free'.)

Then she and her parents and Apef and Shahn will show up, Katin slung to Peka's back.

It's a very large concert hall. They have extraordinarily good seats. The singer is one of the Elf princes, apparently.