Here is the Reaper Miniatures Smilodon painted up with Copplestone Cavegirl.
Now, of course, most of the Smilodon fossils have been from North and South America where it lived from about 3 million years ago until about 10,000 years ago. So our cavegirl would have been from some time between 40,000 and 10,000 years ago. Sabre tooth cats in Europe died out much earlier, so a blonde with a Sabre tooth would be historically very inaccurate unless she had managed somehow to cross to the Americas 9,000 years before Leif Ericsson.
Our cavegirls are probably from a Lost World, somewhere in South America, where they interact with Dinosaurs and other species preserved on an inaccessible mountain plateau.
Although they used to be called sabre tooth tigers Smilodon was, in reality, related to true cats and mongooses (mongeese?). They probably weren't as big as this, as they were slightly smaller than a modern lion, although they weighed twice as much. But then girls were no doubt a lot smaller and in our Lost World plateau who knows?
I have gone for a patterned coat, like many modern big cats, based on the Smilodon from the BBC series Walking with Beasts.