Dude you're prescribing to this very outdated myth that speed cannot be developed which is 100% wrong!!! Anything can be developed to a certain degree!!! Yes we all have natural capacities but they can be greatly enhanced with the right training!!! She has never trained for speed and that's the only reason she's never shown that she's very fast
She actually naturally is very good from the 1K up... She ran a 247 1K in 9th grade with almost no speed training! If she trained for the 800 specifically I think she could run 201 minutes in a year from now and then take that down by a second or two a year to probably a lifetime PR around 1:57
She outkicked Michaela Meyer in a race this year and Michaela Meyer is a 159 800 m runner with excellent kick... It's only because she's always trained to be a distance runner that she doesn't have great speed...