A ruling that a court-appointed lawyer should have done more to block a mother from allegedly raiding her daughter’s settlement fund isn’t just contrary to precedent, a state high court plea claims.It could strap guardians ad litem with “limitless potential liability,” cause confusion and dissuade other attorneys from taking on similar roles in the future, the plea continues.Lawyers for David M. Fahrenkamp, who was shamed by an appellate court this summer for rubber-stamping efforts to siphon from a …