There's a few more criteria, in there, but they're... ones that she feels a little more tentative including, but there's just... so many brilliant lights, so many souls who 'deserve' it, but only so much she can do, on her own.
She looks for those who by their bonds are unloved and unblessed and empty, who have a hidden strength deep within their soul, and she looks for those who love kindly, and love sweetly, and love cutely. There's so much in love that she cherishes, and that should be told of in song and story, but there's places where it can be... a little smoother, a little more gentle, and a little easier to hold and not let slip through their fingers.
And... she looks for those who have a form of love they couldn't otherwise express, someone who will be - filled by the love and care woven into the ring, who can perhaps have their lives be so much better with the ability to be safe behind the shield of love, or perhaps who would benefit from the reshaping crystallization can grant.
And, ever so tentatively, weighted low enough that it shouldn't swing things, in all but the most marginal of cases...
Someone she, herself, could come to love.