So, I made a slight error when it comes to Arnona's actions from round one to two. In round one, she was delaying to try to help diffuse the situation. Then, I had her step back from the alien fire demon and the portal after it came through the portal in round two. She did this before the DMK attacked the AFD.
What I forgot to do was change her place in the initiative order like I did with the DMK.
So, what she did was move back towards the northern wall while readying her bow and then shoot at the mimic before the DMK attacked the AFD. The result would still be a miss and the doppelganger still would have attacked and hit her twice in the round. She falls unconscious and is dying.
I'm not going to change my posts, but I'm going to put her in the right place in the initiative order.
Sorry about any confusion this may have caused.
Thinking about it more, she should have stepped back before the Alien Fire Demon came through the portal, right at the top of Round Two.
A quick reminder to myself!
Since Lowenan and the mimic are now grappling, neither of them threatens any space around them nor have their Dex bonus against those that threaten them. (They still have that bonus against each other.) Neither of them can move without a successful opposed grapple check.
If someone targets either of them with a ranged weapon, there is a 50% chance of hitting the other target.