I gave up trying to control the fairy at endgame. What Vhayne said above is the reason. On a fight like Titan HM, there is no time to sit and dick with your fairy, I have enough on my bar as it is and to have to control the fairy going back and forth between guard and steady at the exact right moment so she does not blow her whole load after she goes back to guard is just to much. I have found the AI on EOS to be pretty good so I just let her do her thing. The only time I use Selene is when we are doing CM seedruns. I just manually click the skill buff when it is available as she never casts it on her own. SE has a lot of work to do on pets. and some very pet unfriendly fights in this game, AV being one of them. They need to let your pet be cleansed when you eat the fruit.