When her interest in them began she was first popping her head in the room to take a peek while they were focussed on playing . If one spotted her she pretended not to be looking and headed back up the hall post haste. Nonchalant at speed as only a cat can.
However height doesn't mean invisible. It means unless you keep moving they will figure out a way to reach up and grab, poke, sniff and wave paws at you. They also make noise at her which she doesn't much like. Mostly it's frustrated whining with an occasional bark.
Gradually she just gets higher and higher but never panics. You may also notice the garbage can has followed the cat to the edge of the tub - it kept emptying itself on the floor of the bathroom somehow. The cat says "It wasn't me."
She also likes to bat the heads of the puppies much like the carnival game Whack-A-Mole. I think she secretly likes the entertainment but she will never win a cheap stuffed toy. If she did likely it would be covered in puppy poop or pee ... or both.