Abusedgirl = Ninja and Hacker

Hi 4 days ago i go to BT with a group that Abusedgirl(SM) with Bamgie(Cleric) made only Ishba and Storm...When we finally win stormwing Abused said that i will loot all then you will loot (/loot) and who win i give the items...So we loot and she gone she go away and took all our items he ninja...After 30min he LFG that he WTS Stomwing Jewel = Offer
I take my other char and say her that i need i offer her 20 platinum medals and he said ok...when we trade i put the medals into trade and then trade canselled and my platinum medals are gone...GM plz do something he Ninja then he Hacking me i dont know what to do...Dont trust Abusedgirl (SM) to nothing...No group no trade no buy nothing plz dont trust him he is fakin Ninja and Hacker...Thank you all...Have a nice gameplaying...

 

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Also, nothing can be done with out screenshots to prove this =/