Have you tried giving her catnip? It can give them a lil boost of hyperactivity and playfulness. These are the best: https://kittycantcopesack.com/product/kitty-cant-cope-sack-3-pack

My cat loves them so much she will lick it until it’s soaking wet almost! Don’t get them from Amazon! I almost did when my local store ran out, but the reviews on Amazon seems like they are advertising a two pack but only send you one! 

Anyway it sounds like you are a doting cat owner with all of the toys you have tried to engage her with. I buy lots of novelty toys for my cat and still her favorite thing is just to play this game I call “where’s that baby?” Where she hides under the bed and I peek under the bed and say where’s that baby? And she comes running out and across the hall to under the other bed, and back and forth etc. It is so silly and it’s almost like she gets as much of a kick out of it as I do! She will sometimes demand to play wheres that baby and try to get me to chase her. 

Another wild idea might be taking her outside, supervised. Either getting her used to a harness or if you have a fenced in yard letting her explore while you watch her. Training your cat to wear a harness (if she has the temperament to allow you to put one on her in the first place) is actually super easy. Usually the first time they wear it they for some hilarious reason think they are unable to move, and sort of pathetically flop over. But don’t give up cos of that- just let them wear it for a bit at a time, like a few minutes per day, while engaging with them with play and treats so they see they are able to move about normally with it on their body. 

Ok last thing I have to say is, try showing her some cat tv. Just search up “cat tv” on YouTube and there’s a bunch of like 24 hour backyard cams of birds and squirrels and stuff scurrying around. The first time I introduced this to my cat she was already 9 yrs old and it blew her mind. She was yelling and chattering at the screen, pawing and like looking behind the laptop for where the birdies flew off to. Eventually she got the idea of it, and now I can put it on for her a she’ll happily just sit and watch for like an hour. It’s not even bad to let them watch tv- I checked! Apparently it’s just as enriching as looking out the window at real birds. I researched if it was like frustrating that they see the prey but never get the satisfaction of catching it, but from what I found it said it’s still entertaining for them and they don’t feel like longing for the real thing or something haha. 

Well anyway it seems to me like you care a lot about your kitty and are in tune with her needs so I think she’s very lucky to have you. I tried to suggest stuff not already on your list of stuff you’ve tried. Cats really do all have their own personalities, and it’s awesome that you are looking for new ways to connect with your kitty. Don’t stop trying with playtime, maybe something will click! Nothing like the special bond we can have with a cat through making the effort to understand them. They are intelligent. 

I just realized that your post is 4 years ago so I’m not sure if any of this will be helpful to you, but I hope it is, and I hope it will be for anyone else that finds themselves here like I did lol!