DREAD 'TAKING TOLL' ON AMBER MISS STRESS: Amber Frey has been busy preparing for the birth of her baby while dreading the inevitable call to ex-lover Scott Peterson's trial, her dad says. - ZUMA Press DREAD 'TAKING TOLL' ON AMBER By HOWARD BREUER -------------------------------------------------------------------------------- March 15, 2004 -- LOS ANGELES - Scott Peterson's former mistress Amber Frey is carrying two burdens these days: the baby boy that's due within a few weeks and her obligation to take the witness stand in her ex-lover's double-murder trial, her father says. Frey, 29, and her live-in boyfriend, Dr. David Markovich, a chiropractor, are...