Not sure about Funky Granny Decor, but Granny Chic is a “thing”... https://www.apartmenttherapy.com/granny-chic-decor-trend-263244

LALA- yes, thats a hodgepodge of styles isnt it? I have a feeling it wont work as a style for her. She hates "kitschy", lace, florals etc... i am thinking she may have meant the bohemian and mid century parts of your description. I will have to ask her! Thank you!

Check out Emily Henderson’s blog. She often talks about the “eccentric English grandma”

https://stylebyemilyhenderson.com/blog/2020-design-trend-eclectic-english-country

This, from the blog linked by Ephma, sums it up wonderfully:

So what is “Eccentric English Grandma?” Well, it’s super eclectic, very collected, full of stories – some safe, some inappropriate. There is an “I don’t care because I’m on my way out” vibe about it, which you could also interpret as brave, risky, and full of confidence. It does not look “designed,” only lived in and loved. I picture her just a touch senile, with a dirty martini in her hand, perhaps some sort of old Hollywood headpiece, and head to toe in patterned clothes. She freely tells us about her affair with Wes Anderson (a younger man! Grandma!) and maybe she has tons of cash hidden around the house. But she’s a little old world too – she loves a floral print, she’s always ready to put the kettle on and share some well earned life experience, and her shelves are stuffed with souvenirs from decades of travel. My friends love her, and my kids can’t wait to visit her because surely she will tell them something they are far too young to hear.

She’s cool.

Ephma - thank you! I sent that to her and she said that was more or less what she wanted (and better yet, can see why she thinks it would go well in her house).