i was going over the walk through but supression did not work, when i got back into my body and am forced to use confusion any ideas on how i can enslave them

I sadly cant see the Walktrough myself since i didnt register my E-Mailacc but if you mean to turn into Sarah to enslave Cassandra then you need to use Charm in the Beginning of the Talk.(Thats what i know ) BUT she is not a Slave but your Lover.

Been awhile but if you're talking about the Heroic story then you either can't have a party member equal level to you or their combined level has to be below yours. I forget which.