The formerly acquitted defendant -- who was on trial in Florida over a decade ago for the murder of her daughter -- was spotted again Friday at the Happiest Place on Earth ... only this time, she seemed interested in the plush doll options that the Mouse House had to offer.

We're told these photos were taken inside one of the general merchandise stores within Downtown Disney Springs ... and, as you can see, she's perusing and browsing the toys.

Granted, just about everything inside this store is child-friendly -- but still ... it's a little jarring considering her history with her own late daughter, Caylee -- who was found dead in 2008 not far from here, which became the center of a massively publicized trial against her mom.

Like we said ... Casey was found not guilty of any of the serious charges pertaining to Caylee's death. She was only found guilty of lying to the police at the time -- and got off on everything else. And yet, she still has that stench hovering around here ... just like O.J.

Anyhoo ... Casey ventured elsewhere at Disney World this weekend, including to the Epcot Center where eyewitnesses saw her in the Japan area. Epcot breaks up its sections into worldly corners, and this photo of Casey suggests she knew people recognized her.

As we reported ... Casey appears to be there with at least two other women who are tagging along, and there's been no indication she's trying to maintain a low profile whatsoever.

Of course, that's her prerogative ... but she's also gotta realize people are probably going to do double takes if they notice her, and Disney-goers undoubtedly have. Nevertheless, CA seems to be relatively unbothered and is carrying on with her business like nothing happened.