It's only painful if you were absolutely required to min cost her to be usable. The fact that she has a guaranteed copy from very easy maps that's as good as a premium makes it a godsend for F2P. You can get a shrine lvl plat unit with -1CR and maybe a silver or two while still making it home in time for Thursday and Monday boosted dailies with no SC spent. If you're a F2P hoping to mincost all your event units, you're being unrealistic.