At this level, there's often less than a second between 1st and last in the finals. That's more mental than physical in the winning.
Don't write her off just yet. She's only 21 now, 25 at the next Olympics. There's been a few UK females who went off and had babies before coming back and winning medals. Look at 34-yr old Kellie Harrington.
The Irish Times carried a story setting out how we've improved in our medal haul over the past 10-20 years. We randomly produce semi-decent athletes just like any country but, for the past decade or so, the Govt has given them a few quid so they could go full time, got semi-decent facilities so they could train and also decent coaches from abroad. Rhasidat has gone to America on a scholarship which she's just finished I believe. She has the right coaches over there and but now the financial pressure will come on her as a professional, non-college athlete. She can certainly walk the talk and I think she can talk the talk now that she's seen what it's like at the top.
It was the same with the French swimmer, Leon Marchand, who was a 'talent' but after going to a specific coach in America, he ended up winning 4 individual golds at the Olympics.