Mono is tough with Pussycats as they lack good 4*s with Yayoi gone. They also tend to need some raw power manip/attack manip to win some battles.
That's why I'd suggest you splash in Chiara, she's a great 3* card you can use. Spiaghi is an option too, but he might be overkill.
Charlie is a beastly multipurpose card, Cherry has extremely solid power and a wonderful ability, Muze has great poison, Wanda has solid walling capabilities, Ivana has that anti-SoA factor you'll be looking for, Brittany forces pillz and Noemi can actually make you win. One win with Ditha can ensure you a win if you play it right.
That's about it, consider all of the options above and be creative! If Noon Stevens works for you by all means use her.