Kitty has a highly developed sense of hearing and smell (and instincts of a predator. Whoops.) due to being a werewolf, so this is to make things clear.
This is all in-person only. With the exception of their scent and stealthy guys, she would need to be reasonably close.
Can Kitty....
Smell when your character is afraid? Hormonal (in various senses of the word)?
Hear your character's heartbeat and be able to tell when they're in a state of stress, anxiety, or lying?
Tell when they're hiding like a hiding thing nearby? To elaborate on this: Characters that are v. good at stealth, eg. Batfam she'd have no chance of realizing they're there.
Identify your character's individual scent in public? To elaborate on this for those with multiple identities: Kitty wouldn't realize that Character A is known as Person 1 and Person 2 unless she encountered Character A in disguise as Person 1 and Person 2, or if it, is say, Person 1's place, but she's encountered Person 2, and it smells only like Person 2, not mythical Person 1.