I totally get how something tiny can turn into a whole production with little ones. At that age, they feel everything so big and real. One thing that might help is letting her be the doctor and “treat” your imaginary boo-boo. Sometimes switching roles helps them feel more in control and less anxious. You could also try distraction, like getting her excited about choosing a fun character band-aid or making a “healing potion” with water, food coloring, and a little sparkle. Kids love the drama if they’re the one creating it. Another idea is to tell a short story about a brave little animal or superhero who had a small boo-boo but still went on a fun adventure, she might relate better through imagination.
My husband’s nephew did this at about the same age I used to perform “surgery” and make it better One time, I actually noticed a splinter in his foot and had to perform surgery for real 🤷🏼♀️🤣 He never walked around barefoot again. He’s 16 now lol
Why are toddlers so dramatic. Mine cried because bingo was upset in an episode of bluey 🤣 All i can suggest is maybe pretend you have the same injury and have her to tend to you, and maybe you can look and sort hers out.