The writing style does not seem like Tera..... I suppose that the account may have been sold? She can report that, and maybe admins will freeze usage account? but if they have no way of verifying who is the real Tera, then they might let it keep operating with the new owner... then we might get a publicly displayed battle between Tera and Tera2, perhaps?
Perhaps some DT members would flag the Tera account if admins won't recover it.
I am not sure what is exactly going on with Tera because sometimes what happens is that the member is not sufficiently persistent in the attempt to get the account back - or let the stolen account stay in the hands of the other for too long, and thereafter it becomes more ambiguous regarding who is the original owner.
DT members do flag accounts as stolen, that is for sure... can also hit the report button in order to attempt to get attention to moderators... but if you are not the real owner, then it becomes harder for you to prove that the account seems different.
Some kind of similar thing happened with AdamstgBit. He was not persistent in trying to get the account back, but part of his reason was that he also became disgruntled towards forum admins, too.