Do you knows some fanfic with middle age actresses?
You can read fanfics of:
• Cat Grant & Kara Danvers (supergirl)
• Miranda & Andrea (The Devil Wears Prada)
• Carol & Therese (Carol 2015)
• Sharon & Brenda (The Closer/Major Crimes)
• Bernie & Serena (Holby City)
Also if you are interested in teacher&student fics, there are some of Swan queen.
And I might write a fanfic of a love between a young woman with a middle aged one, but I’m not sure if people would read it, because it will be pure fiction, I won’t base my writing in characters that are known, so I’m uncertain 🤔
(anyway right now I don’t have a computer but if you wait, I can make you a list of my favorite fics and send it to you)