Lauda has left the forum forever. That was her own decision. Therefore the only way to make her neg inactive is to ask DT members (including DT2) to remove her from their trust lists. There perhaps should be a separate thread for this on Reputation board as the touching each DT member separately is a tough task.
You do realize that if Lauda gets off DT for this reason that means all the negative feedback S/he left other scammers for all those years will go under untrusted feedback?
OP, I see another DT member,
Lutpin as well left your account some negative feedback, and they are still active. try sending him A PM about the issue.