Practicing law without a license

Paralegal Sarah is a probate paralegal. She worked for a probate lawyer for fifteen years and is now a freelance paralegal. She is an expert in her field. Attorney Franco hires Sarah to handle the probate of a long-time client's mother. Franco's law practice is exclusively worker's compensation law. Franco knows nothing about probate. Is Sarah in danger of practicing law without a license? Is Franco in danger of aiding Sarah in UPL? What can the two of them do to remedy their situation, if anything?