I didn't position my pet for titan ex anymore nowdays, what you do is, just cast sustain if your selene/eos is in low HP. Additional aoe healing from your healer partner should be able to keep the fairies alive until the end of the fight.
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In addition to the ones listed, I also macroed Whispering Dawn into Succor, so that my AoE healings cast together.
Kinda surprised no one mentioned this...(or maybe I didn't read close enough)
Pet Embrace Macro
/macroicon "Embrace" Pet
/pac "Embrace" Pet <mo>
/pac "Embrace" Pet <t>
Pet will first attempt to heal your mouse over target, if any, else it will heal your current targeted player. I bind this to my mouse button four but if only 3 button mouse avil (wheel being button 3) I bind this to my left arrow key then the corresponding pet actions to my up, down and right arrow keys. I find it easier to hit mid combat leaving my a/w/s/d undisturbed.
Other targeting options you can use
<f> - focus target
<tt> - target of target (good for Selene silence)
- <3 Trauma