I added 113Allie on Steam, in order to talk with her( unfortunately I couldn't post on her profile, because the comment section was private for non-friends ), but my request was declined.
Couple of days after that I was added by 113Allie after she saw this thread on the forums - http://steamcommunity.com/groups/bartervg/discussions/0/353915309335355778/
She indeed comfirmed that Platypus (http://steamcommunity.com/profiles/76561198120636624/) is her main and that 113Allie is one of her alt accounts.
She said, that about a year ago her alt 113Allie was hacked, stating that she didn't know about the dispute, implying that it probably was the hacker, that made the trade with Samkiud and stole his games.
I asked Platypus ( with alt 113Allie, that is now connected to her main on Barter ) if she would reimburse Samkiud ( and the other two victims from other disputes ), to which she eventually agreed. She offered to reimburse each victim with 1 CS:GO Key.
I managed to trade with her for those keys and provide Samkiud his reimbursement.
However I would like to mention two things from my research:
1. I asked Platypus to provide screenshots of her license and product key activations, so that I can compare activation dates of games from her library( that match games with the same titles below ) and the date this offer was accepted. 9 Clues: The Secret of Serpent Creek, Dark Arcana: The Carnival, Grim Legends: The Forsaken Bride, Nightmares from the Deep 2: The Siren`s Call, Nightmares from the Deep 3: Davy Jones were activated on 27 of July 2016; Clockwork Tales: Of Glass and Ink - 7 april 2016, Grim Legends 2: Song of the Dark Swan - 5 october 2016; Quest for Infamy - 15 august 2016 on Platypus' account.
2. When I asked Platypus if 113Allie was the only account of hers, that was hacked, she said that as far as she knows it is the only account that was hacked and no other account of hers were hacked, at least not to her knowledge.
However I went to check the groups of the supposed hacked account ( 113Allie ) and I did not found Barter among the groups. So I am not sure why someone would want to hack the account 113Allie (since the account itself is not worth anything (from what I can see) and back then it probably had even less games).
Also why someone would not only hack it but decide to go on a site, called Barter.vg and steal some bundle games? - the scammer could not know that 113Allie has an account, specifically on this site, especially when Barter is not part of the account's groups, or indicated anywhere on 113Alli's profile.
That is everything I have found from my research. 15 months ago
X 113Allie failed offer with Samkiud ( Countered )