I've macro'd both buffs (seperately)

Here's an example
/micon "Fey Glow"
/pac "Fey Glow"
/wait 27
/echo " text <se.7> "

This way it reminds me that the buff will end soon so I'm prepared to cast the other.
I'm not sure but I think if selene isnt on obey she only uses 1 of the buffs and doesnt cycle them. Could be severly wrong though. I like to have as much controll as possible so I'll leave her on obey and do it manually.