Here's what makes Don pleading the 5th even more damning.
“The negative inference that can be drawn at a civil trial down the road isn’t great for him — that’s the consequence of refusing to testify today, that the jury will be instructed that they can infer that his testimony would have harmed his case — but it’s small potatoes compared to the substantial risk that he would (1) disclose damaging information that could be used against him civilly and/or criminally, (2) lie to avoid disclosing harmful information and thereby open himself up to perjury charges, or both,” she told Law&Crime.
Donald Trump asserting his Fifth Amendment right against self-incrimination could protect him in criminal matters — but hurt him in a likely civil case.
lawandcrime.com
The jury can not be so instructed in a criminal trial. But in a civil case they are allowed to assume, as they should, that Don pleading the 5th was done because testifying truthfully would have revealed his participation in a criminal act.