Cat came into contact with water w/ week old dead mouse inside.

My landlord left a bucket of water with a dead mouse inside of it in the hallway of our apartment and didnt tell anyone. My cat lightly dipped her paw in and now I'm worried she'll contract some sort of parasite. The mouse did not look decomposed at all, and appeared to be in some sort of trap (I think my landlord was going to throw it out, placed in the bucket and forgot). I immediately washed her paws with water but I'm still worried. Should I be? How likely is it she contracted a parasite? Do I need to get her tested? Do I need to wait a certain period of time before the parasite will even show on a test? Is it genuinely realistic to get her tested or is it just the vet in you being extra cautious?

Shes a 6 month old kitten.