Isabel-bot often uses the Caro-Kann defense. I beat her fairly easily with the Hillbilly Attack. It's not a very common response to Caro-Kann and maybe she doesn't have it in her opening repertoire.
Help beating Isabel-bot
I just beat her playing Bird's Opening. She's not familiar with it. In fact her response to the first move was that she needs to ask her coach about it!
I just beat her unassisted, I had been trying for months. She played the Caro Kann which she doesn't usually play, I think that was a factor. I definitely blundered my lead a few times but her mistake on move 54 allowed me to clinch victory
Spoiler: If you start with a fianchetto king side, and then fight for the center with your pawns and knight, she will take her queen out early and if your knight is well placed, you will be able to fork her queen/king at the expense of your knight. She is still hard to beat after that, but if you don't blunder, you're ok and she will choke near the end.
Isabel is "studying" the endgames with her coach, meaning she doesn't have good understanding fully.
I suck a decent bit less than when I last posted in his forum.
Here is a game for anyone struggling with Isabel bot.