Still steam as much of the dent as possible prior to filling
Broken fibers will stand right up and fill the space with exactly the right color wood which will change color over time just like the rest of the stock.
When you get it as flush as you can try it at least one more time. Do not disturb the finish anywhere until you do this.
Most older stock woods will respond to Formby's Furniture Refinisher
https://www.amazon.com/Formbys-30010-Furniture-Refinisher-16-Ounce/dp/B000C018CMBuy it locally the bizarre price is a function of shipping price.
Rub the entire stock gently with a damp rag. It will take a lot of gunk off. Do not try to remove everything, just move it around. Most dings will disappear with just that. Missing wood obviously will not grow back, but your repair will be much smaller.
Super glue and accelerator will fill the spot, but do it in multiple layers, not one big blob. Be very careful when flattening the patch. Do not sand the surrounding wood.
Another wiping down with Formby's to spread old finish over the repair will usually make it disappear pretty thoroughly.