Mommy and Two-Headed

[Koto]

Hi. I'm not pretty sure how many levels will have a Mommy when the card "Two-Headed" is played in his child BEFORE Mommy appears.

For example:

I use Baby (-5) over 3,872 Orcs (Lvl 10), so I got a Lvl 5 monster. Ok, then I use Mommy, so the Mommy haves Lvl 20, because Baby doesn't affect her. Other player use Brood (+10) over the monster. Finally, I use over the baby "Two-Headed", so...

Baby 3,872 Orcs = (Lvl 10 - 5 + 10) x 2 = 30

Mommy 3,872 Orcs = (Lvl 20 + 10) x 2 = 60

That's correct, right?
...

But what happens in the next case?

I use Baby (-5) over 3,872 Orcs (Lvl 10), so I got a Lvl 5 monster. Ok, then I use "Two-Headed", which doubles the levels of the monster and his enhacers. Other player uses Brood (+10) over it. Finally, I use Mommy...

I know Baby will be:

Baby 3,872 Orcs = (Lvl. 10 - 5 + 10) x 2 = 30

But what happens with Mommy? Her +10 extra levels are doubled by the "Two-Headed" or just plus at the end?

Mommy 3,872 Orcs = (Lvl. 20 + 10) x 2 = 60

or...

Mommy 3,872 Orcs = (Lvl. 10 + 10) x 2 + 10 = 50

What is the correct way? I wanted to know because this could make important the playin-cards order... Hope my question was fully clear. Thanks!

See ya