She's wondering if she can leave him alone in the hotel room?
. . . no
. . . WDW rooms are not pet-friendly, except for true Service Animals, of which this is not
. . . by ADA Law, emotional animals are poets, not Service Animals
. . . additionally, the maids will not service the room, as they cannot determine if the pet is vicious/dangerous
Does Disney provide any kind of crate?
. . . no
. . . since pets can't be kept in rooms, crates/pens are not necessary
. . . they do have these at certain rides/attractions for Service Animals while the owner in on the ride
I'm clueless here so any recommendations (even who to call) will be welcome
. . . if you take a pet, board them at the Pet Care Center
NOTE1: If a pet (non-Service-Animal) is found in the room, the hotel has the right to evict you - paid or not paid (FSA 509.141). And, you must vacate immediately, or the Sherriff can come and evict you without further notice. Florida laws, due to the high amount of tourism business, are written to highly favor hotels and motels. Hotels pretty much get any kind of legislation they want. Per The Florida Statutes: A hotel just needs to give a verbal demand to vacate. Or, slide a notice under the door. Then, they can call the sheriff to evict the guest immediately.
NOTE2: I can remember working at SSR, when a guest complained of barking in the next room. We investigated immediately. The guests of the rooms with the barking dog (not an ADA qualified Service Animal) were gone before dinner. Rules-are-Rules.