Depends on the relevant facts and circumstances.
Despite your use of a question mark, this sentence is not a question. If you intended a question, I cannot discern what you intended to ask. For what did you pay this family member back? Can you be any more precise than "about 6 months ago"? Also, "family member" could mean a lot of things, so the specific relationship may matter.
Huh? I have no idea what you mean by "loan that can't be touched." No one wants to "touch" a loan. If you made a preference payment (and it's not clear that you did), then the bankruptcy trustee may be able to seek to recover that for the benefit of the bankruptcy estate. You'll still have the loan obligation, which won't be impacted whatsoever (I'm not sure whether your obligation to repay a "pension loan" will or won't be discharged in the bankruptcy).
Obviously, this is something you should discuss with your bankruptcy attorney.
I disagree with the "and will" part of this. Just because the trustee can do it doesn't mean he/she necessarily will. Bankruptcy trustees ignore low-hanging fruit all the time.

