@bookstardust You can make money from the Public Domain versions. For example, sell your art or animation/film that based on the Public Domain version (not the latter versions); and without implying it is Disney. So, maybe adding a fine print it is based on the Public Domain work is a good move to prove you're not claiming to be Disney and not deceiving people.
It won't be surprising if Disney will do gymnastics just to “protect” their “brand”.
Then again, as @lethargilistic mentioned, it's different in the US; and it should be fine as long as you used the Public Domain version.
However, from where I live, Disney can use the “brand” angle and everything related to it.