Nice try, and you could be right, but Yandex translated that as "she has less cats".
Amusingly, Google translated your sentence as "she has less cat". Although that logically follows from our intended meaning, I think something has been lost. ))) Be careful with translation software.
That is pretty sad, it's like to say: "Some of her cats are dead and that is good". What kind of monster are you, Duo? (it's a joke)
·большой - large, big
·больше - more, larger, bigger
·побольше - larger, bigger
·маленький - small
·меньше - less, smaller, tinier
·поменьше - smaller, tinier
I hope this helps!