I am in Cet's Temple attempting to change Kerah the Angel with the Holy Water, but it doesn't work...she flys around the whole time possessed and then changes back to normal every once and awhile. I have gotten her to come down from flying several times and have tried giving her the Holy Water, but when I do, the game locks up. I have done this ten times now. I am playing this game on a laptop..could this be the problem??? What is the deal???

Also, I cannot find G'Ezrred Ra's heart that he complains about needing. If you can spoil me on this, that would be cool. Thanks for any help.