Here is Miko summed up quickly:
"I am a Paladin from a land you've never heard of. For your evil crimes you committed outside my lord's jurisdiction you are sentenced to death. Oh wait, uh, apparently my infallable divine gifts are wrong, but you are still under arrest even though I have no actual legal powers here, but that doesn't matter because if you don't come with me to face capitol charges in a faraway kingdom I'll have to kill you. Oh, and as my prisoners you are effectively my slaves and I expect you all to obey my strict ascetic code of conduct and Paladin's code of behavior because anything less is immoral and decadent and thus evil. While we're at it, before we fight these Ogres we've got to stand around and wait for them to finish eating and get ready for the fight because it's dishonorable to do otherwise. Oh, and this inn you were staying in was destroyed by assassins, so it must obviously be your fault for not humbly sleeping in a ditch resting your head on pointy rocks and eating lichen like I suggested, and anything bad that happens to you is divine punishment, however your recent ordeal with a cursed magic item has made you marginally closer to my impossibly high moral standards, so, wanna date me now?"
As a PC she's a train wreck joining the party, as an NPC she's an incarnate railroad, as a DMPC she's every PC's worst nightmare of a DM ego trip character. She's a walking joke of every bad Paladin stereotype incarnate, with a side order of bad things that can happen to derail a campaign.