If she doesn't receive her permit on the 30th day I would be very surprised. The law allows up to 30 days for resident permits and King County uses them all.
If the permit doesn't arrive on the 30th day, I would call the supervisor of the department at the Sheriff's department. If that doesn't do you any good, call Sheriff Sue Rahr directly. She recommends people arm themselves, especially if they live in unincorporated King County. She readily admits her officers can't be there in time to help you.
She IS on our side. A good Sheriff.
Got mine earlier this year - Arrived 5 days "early", even!
I live just outside Issaquah - The IPD was *VERY* unhelpful - didn't even want to point me at where I should go after telling me that I was out of their juridfiction - all but slammed the window shut in my face after very grudgingly telling me that I needed to talk to either the KCSO or state patrol.
I ended up putting in my application on March 5th at KCSO's Seattle courthouse location. Minimal "pain and suffering" - Annoyance of having to fill out form, the "agony" of the "cashectomy", and about a 15 minute wait before the fingerprinter was free to do her thing with me, but otherwise smooth. Card showed up in the mailbox on March 31, dated April 5.
Have heard from others that the time and "pain level" varies from jurisdiction to jurisdiction - Friend in Snoqualmie tells me that they apparently aren't "happy" to pass 'em out there - made him jump through some extra hoops (Something to do with the address on his driver's license not matching his just-moved-to mailing address, so they gave him the runaround - I wasn't clear on the details) and grumbled (quietly, but still grumbling) about having to deal with the headache of issuing to "another one of those gun nuts", but eventually got it to him.
Heard from another friend in Enumclaw that his was, other than the "cash excision" procedure, almost totally painless, and his card arrived in the mailbox slightly more than 2 weeks after putting his paperwork in. Didn't think to ask which department he went through, tho...
Just some datapoints for ya...
(And yes, I agree - Sheriff Sue seems to "have it together" on the whole "When seconds might make the difference, we're probably minutes away, so have a gun and a plan along with your cell phone" concept.)