Board Thread:Questions and Answers/@comment-118.100.126.210-20130702134401/@comment-11480945-20130702221936

All daemons can hit a max skill level of 20! :) wikia contributor above me is right, if you havent maxed out dark elf's level (not skill level), her skill level still has potential to rise merely by levelling her up.

I assume this is what happened: summons dark elf --> feed wih wind weasels until skill level 11 --> dark elf not max level (not skill level) --> feed with more wind weasels until level 16 --> dark elf still not max level --> fuse magatamas --> dark elf maxes level with a natural skill increase at level 49

On the other hand, if youre really bored, you can continue to feed her wind weasels to get her skill to 20! Though you should only do this if you have no other use for them wind weasels, as your dark elf will not gain exp for this. :)