Pam Dix, a member of UK Families Flight 103, whose brother Peter died in the explosion, said she was optimistic that all the details would come to light.
"It would be very interesting whether further inquiries will relate to Libya or elsewhere, and if Tripoli cooperates," she told Reuters.
The British government has resisted demands for an independent inquiry, saying little would be gained and Megrahi's conviction still stood despite his release.
It denies pressing the devolved Scottish government to free Megrahi to help improve business ties with Libya, which has Africa's largest oil reserves.
(Editing by Angus MacSwan)