Alternate, since my only active character is already shipped to hell:

Winter and Lily have a child! What is your character's contribution to their upbringing?

they do, her name is Molly I mean

Marina is the BEST autn

HAHA

Well. I suppose my answer is somewhat obvious.

And by that I mean she's the irresponsible aunt who shows the kid some ADVENTURE

Lily is a rather doting but also stern-when-necessary mother, I figure

Marina has competition for cool aunt. Winly gets to fret over their child being taken on dangerous motorcycle rides.

...this kid is going to have SO MANY COOL AUNTS

Marina will teach the child fashion then

and try to refrain from freaking it out with her glass eye

Raye also teaches the child to fight after their first bully encounter when their moms inevitably tell them to ignore the jerk or try to befriend them or whatever

Oh no, Lily is teaching her children self defense. By all means. They lead dangerous lives.

All their children are gonna grow up tough

Yeah, but Raye'll teach her how to fight dirty

Throw sand in the eyes. Bite the jerk!

Screw psychology. Gouge the eyes!

Marina: ...how about we not permanently cripple or mentally scara child?

The hypothetical one or Molly?

Both!

Also the bully

Marina: /walks up to Molly with hot cocoa

Yeah, but Molly looks traumatized every time Raye wears her red boots

Oh. Also, Kirara makes sure that kid has a healthier appreciation for film than somebody else

Marina doesn't plan to raise children soon so nieces or nephews would have lots of attention

Related question: how many people are going to try and teach this poor kid combat?

And if it's a girl, how hard will the Precure Dynasty (TM) be pushed?

Marina: /kidnaps child for sword practice

The chorus to her theme song has the words "DON'T LOSE YOUR WAY" in minimum capital letters with potential crazy font sizes and effects. Raye encourages any girls to do follow her own path. Precure or not.

Whoever has a kid will have the kid in question spoiled by Emilia.