Do you have any photos of her comb?
From what I can see in the photos, I'm going to say a female around 1 year old that's possibly been kept in with a rooster previously. My non bearded hens get larger wattles at around 1 year old.
Not all females squat though, I have layers that never do.
As for the long stick like strands on the tail that are like cats whiskers, even my show quality hens get them. I'd say she's either currently moulting or going to moult soon. My hens tend to loose the fluff from the feather and then they moult the 'stick'. A new feather grows that is not just like a cats whisker but is in fact fluffy.
They look awfully scraggly when they have them but they will eventually be replaced. Her feathers around the back of her crest and down her neck look sparse which also makes me think she's moulting.
On one of the photos it looks like she has raised scales on her feet, that may just be image quality though. Could be scaly leg or a sign she's moulting/about to moult since the scales are replaced then too.
It's harder to get big giant crested silkies over here due to that they aren't usually favoured for showing. British standards prefer smaller crested silkies. I do know of a few places that sell USA silkies though! I have one and luckily the last judge liked her.
It is hard to say for sure without knowing the age but it's either a hen or a young Cockerel!