The plan the entire time was to do a version of Mae when she's about 25 (which, if I'm mathing right, would be how old she'd be in The War Within), but alpha spoilers made me jump on it faster. So if Mae was in the canon timeline, here's how'd she'd look.
"I am not the daughter of the Guardian. I am the daughter of two Guardians. And I will protect this world as they did."
A bit of an updated look to Maira that tries to merge iconic traits from both of her fathers appearances and decided to give her heterochromia.
War Within Alpha Spoilers Under the Cut:
It's assumed that Khadgar dies when Dalaran falls in the opening moments of War Within. Either way Maira loses control of her powers for a brief period of time in her grief/worry/anger and winds up with a white stripe in her hair from the strain it puts on her. Unknowing to her this just serves as yet another reminder that she is not just the daughter of Medivh but also the daughter of Khadgar, as Medivh tells his daughter afterwards that when Khadgar first arrived to Karazhan he had a similar stripe of white in his black hair, too.
If happiness was a tangible thing
It would be you
If you'd told me the feeling you'd bring
I'd think it untrue
And people search for a wonder like you
All of their lives
You still amaze me after all this time
You pull me in like some kind of wind
Mesmerized by the hold I'm in
Leave you here, I don't wanna
I wanna
Love you as one does
I, I will protect you at all costs
Keep you safe here in my arms
I, I will protect you at all costs
At all costs
What's pain when I look at you no way
I could explain you even if I tried to
I'll never dream like I used to do
If someone tried to hurt you, I don't
See how that could happen
I'd fight for you in ways you can't imagine
Felt this no I haven't I hope
It would be all right to stay right here beside you
And love you as one does
I, I will protect you at all costs
Keep you save here in my arms
I, I will protect you at all costs
At all costs
If you're ever feeling like you're lost
I will come find you
Man all the fronts there's no ocean I won't swim across
To be right by you
And not just once here, and now I swear on my response
I'll remind you
And love you as one does
I, I will protect you at all costs
Keep you save here in my arms
I, I will protect you at all costs
At all costs
-- At All Costs (Demo Version)
Raleigh Ellerian and Maevess Faerbrook ( @khadgars-little-imp ) enjoying a moonlit dance on the surface of Stormwind Lake