A cabbage bath or rice or oatmeal bath then just put it also on her face with a clean wash rag
If it's always in the same spot, consider what is touching that spot - she may be allergic to the material she's sleeping on, for example! Worth trying organic cotton pillowcase if that's the case.
Aquaphor with hydrocortisone
https://www.amazon.com/Aquaphor-Childrens-Ointment-Hydrocortisone-Anti-Itch/dp/B09RY5NKKN/ref=mp_s_a_1_1_pp?crid=AD8F864MS8LY&dib=eyJ2IjoiMSJ9.DNZx0gZOXqyzmiL1c4OTuOQbjKOfVC0ZWbcN2goTMWVjg8WKh8sYchFzmv0nAXB-wkDy5weEqgb3w_WJvziDo7Ffs40YQ6tIubwqWF4CGtPpbxr4JMpGTm4JuaWSgICV8bRfe7NlLD3-llwdUIF95pwAI9zGtbnUQnzX20RF9oFADR2ZLYYSaBIgiFPbm9yv8vS32XoB_dyYkXL2LaVNgA.1fEHaJSEqAelcmhjk0fwoGfBwLoewkzWq2Lk_s3EP0A&dib_tag=se&keywords=aquaphor+with+hydrocortisone&qid=1738786690&rdc=1&sprefix=aquaphor+with+%2Caps%2C120&sr=8-1
I’m listening to the answers for this! My daughter has the exact same thing! Also told more moisturizer. All fragrance free and fancy lotions, detergents, and soaps. Nothing works.