SCH I feel is still about that planning and pet control, as what you should be doing (In trials and savage anyway) is placing her near the center of the room, as that way even if you aren't in range of someone she can still cast embrace. In addition, you and your fairy have a very versatile kit that lends well to a variety of situations. Your fairy themselves have an aoe regen, a strong single target regen, damage mitigation, and an aoe healing buff for both you and your cohealer. Alongside this excogitation has dual purposes in both being used to negate large incoming damage (and rewards you for using it like that) but it also can be used at unexpected situations. To add to this you also have chain strategem, which gives you that damage utility to further add to your versatility. Generally speaking though your job as a SCH is to properly deal with auto-attack damage and to fill in the gaps your co-healer might leave due to your extensive OGCD kit and that is your main job but all the same you have an answer and a plan to pretty much any situation you're in.