It doesn't look like bumble to me.
Is there a hard, dark "scab"?
Hard to tell how swollen it is with no comparison at the same angles/lighting.
The red spot looks irritated, or perhaps an old scab that's healed?
How is she walking?
It's hard to prevent digging injuries, but any of the main items should be looked over.
I'd check the roosts first. I run my bare hands all over my bars to ensure there are no rough spots, jags, splinters, etc. And really anywhere else they routinely walk/hop/perch.
I nice soak and maybe use sports tape to fashion a cotton ball cushion underfoot could offer her relief, is she appears uncomfortable.
I would NOT go cutting, poking, lancing.
They have an amazing ability to heal when we just let them.
Keep us posted!