I like both of them, although the images a bit less. I can imagine your daughter enjoys those, however? Her own pick? For a picture of the female barbarian, I would suggest looking for one that actually wields a shield, as the current one doesn't have one. That's a bit strange for a unit that's better in defence than offense.
Furthermore, her attack and defense development depend a bit on what rules you would employ. Some people prefer to give the Barbarian a Broadsword (3 dice) to start off, instead of a Short sword (2 dice), whereas others let him start with a Short Sword and simply grant a flat +1 die bonus to all attacks he makes (even later on, with different weapons equipped). For your female barbarian, you'd need to make a similar consideration, I guess.
The image of the necromancer is in my eyes too bright, too shiny. A more darker, sinister image might work better ... but it's personal preference, I guess
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As for special skills, just giving her 4 spells (as opposed to the 9 of the Wizard) might make her weaker. What you could perhaps implement is a system of resurrection and control, where Skeletons cost 1 point to control, Zombies 1.5 (rounded down) and Mummies 2. Add up the total that are under her control to find the total control effort. At the start of each of her turns, she rolls a normal die for each Undead under her control. If the roll + total control effort exceeds her current Mind Points, she loses control and the Undead either breaks free, or crumbles down. Maybe you can rule that one Skeleton she controls is always "free", so she is never without a henchman so to speak, and only add up the tally for all other Undead.
For example, if she controls 2 Skeletons and 1 Mummy at the start of her turn, she would need to roll for one of the Skeletons and the Mummy. Total control effort would be 3 (1 for one of the two Skeletons, as the other is free, and 2 for the mummy), so she'd need to roll 3 (6 MP - 3 total control effort) or less for the Skeleton and likewise for the Mummy. Suppose she rolls 4 for the Skeleton and 2 for the Mummy, she would lose control of the Skeleton, but not of the Mummy. This would immediately reduce the control effort to 2 as well, so next turn she'd have better chance to remain in control of the Mummy - unless she summons more Undead, of course
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You will have to decide where she can get the corpses to raise from; either slain enemies, taking control of existing Undead, etc ... but if raised from existing corpses, they appear there.
You could rule furthermore that whenever she has no Undead under her control at all, she will always be able to raise a single Skeleton. Takes her action for that turn; you'll have to decide if the summoned Skeleton can attack and/or move right away, or has to wait a turn. That Skeleton will always appear right next to her.
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. It could spark inspiration with other people, too!
