We're having a troublesome day here in chicken world.
I'm hoping I mis-remembered the day that Mima (broody silkie) started sitting on the eggs, or it's day #22 now. 
Late Nov. hatch, she pushed out a couple (I opened and were non-viable by the time she pushed them out). Those eggs were 1 1/2-2 days late too. I decided to sleep on it and woke to 3 beautiful peeping perfect chicks.
 
IF I remember properly, she began sitting on February 4th. IF that's correct, the eggs would be at day #22 today.
It's hard to believe that not a single one has hatched. No pips that I can see, nor peeping from inside.
She is an excellent mama hen, never has abandoned a nest and never has pushed out a viable egg.
I am really bad at candling. 
 
What do you all think? If I remove the eggs to try candling, I fear it will discourage her and she might leave the nest entirely. I could always just wait but...how long?
 
Is it a sort of good thing (albeit confusing) that they're all doing/not doing the exact same thing? (meaning it's improbable to get a zero hatch rate)?
Several eggs are teeny tiny ones laid by her daughter (whose eggs are even smaller than Mima's). One egg is the olive egg that I've been hoping will hatch (the one that is 4-ish days behind the others), and there are 2 medium size. She covers them surprisingly well.
 
Please, anyone who can even guess what to do and how to do it, I need ADVICE, Directions?
 
Sorry for my long-winded post...Again. I am thankful for any and all replies!!!