i need help in dw3 for gamboy color

I been going nut for a week trying to figure this out im

stuck in dragon warrior 3 in the part u have to give the luuv memory to olivia the spirt. anyway i read the faq and it say to use it when u are near the river befpre u get push

by oliva.well i try that a million times and always say "nothing happen" could someone please help me!!!

and exactly when to use the locket.I'm losing my hair!!

Because i had the nes version and i got by that no problem.