Summer vacation + cage-cleaning procrastination = long post . . .
I'd have to agree with no lavender involvement. Lavenders always (though to varying degrees) show slight hypomelanism compared to anery and charcoal corns, even when the mutations are in combination (moonstones, charcoal lavenders, etc).
As for dilute--though it seems to affect a different layer of pigmentation than the other hypomelanistic mutations--also generally lightens the snake. John F's dilute pewter (which I know you've also seen in person, Gelshark

) is lighter than she looks in that picture, and doesn't have blacks as dark as this girl shows.
My best guess would be an anery-charcoal blood, due to the lack of neck yellow and dark eyes (charcoal), and the darkness and contrast of her saddle blotches (more characteristic of anery). Gel's definitely right that a good, clear shot of her eye would help.
There's one thing that makes me scratch my head, though . . . I have several snakes I believe to be anery-charcoals (working on testing them), and all of them tend to look more like aneries than charcoals. Little or no neck yellow, but light irises and high-contrast patterns, like aneries. As if, when charcoal and anery are combined, the anery mostly overwrites the charcoal. On this lady, though, the eyes definitely look like charcoal (from what we can see). So . . . :shrugs:
Two other somewhat off-the-wall thoughts: 1) I follow a few other breeders in suspecting there may actually be two allelic forms of anery A, which have slighty different looks. Perhaps that could be part of the confusion? and 2) Your mystery female looks to have a slightly non-standard head shape for a corn. There's always the possibility she has non-corn ancestry. Plenty of large breeders have crossed creamsicles and other hybrids with corn morphs, to get "creamsickos," bloodred creamsicles, cinnamons, lavender creamsicles, etc. So it's not too much of a stretch that she could be the F2 of such a pairing, and that might explain why typical corn mutations look a bit odd on her.
Really, only breeding her will be able to tell you what exactly she's carrying. Regardless, she's a lovely animal! You should be careful showing her off here, though, as people may start trying to talk you out of her.
