Thinking about Mara Sov as the one who made Savathun into a Guardian, in the sense that she got the killing blow in on first-life Sav via performing the exorcism of her worm mortally wounding her in the process...

I do wonder how Mara feels about bringing a new Lightbearer into the world, given her sentiments toward Guardians, and a Lightbearer Hive at that, given all that they’ve taken from her, and it being Savathun, with whom she has tremendous personal animosity.

And more than that: by lifting the curse of the worm leaving a power vacuum for the Light to claim its millennia-denied place, she essentially acted as the second mother of the Lucent Brood in a roundabout way. The Lucent Brood would not exist without the Witch, Radiant, but She wouldn’t exist without Mara Sov.

So we have a situation where Mara has transfigured a whole people twice, first with the crew of the Yang Liwei (directly), second with Savathun’s brood (indirectly), twice where she helped deliver a species from darkness, but ushering in untold and unforeseeable new conflict and strife in the process.       

And if you consider Savathun’s role in the collapse, protecting the Traveler which perhaps allowed for its final stand against the Black Fleet, the burst of Light that mingled with Darkness which saved Mara Sov and opened the path for the creation of the Awoken . . . well, the case can be made that Savathun set forth the chain of events that allowed for the existence of Mara as we know her today.

They are each other’s banes and neither would exist if not for the other.