anyone know why she's like really really mad right now and want's to kill everyone?

did something happen to the adventurers she saved?
why is she like really angry at evil god D guy? he hasn't shown up for a while...
I get that she thinks she's dancing in the palm of his hand, but why did she just blow up about it after her latest evolution?
is she trying to be arrogant to get her arachne/dryder evolution to trigger?

also, YEAY she finally met humans :D and got fruit~♥
she should have stuck around and tried to barter silk for fruit~♪

My guess is that "禁忌" (Taboo) revealed the truth about the world. It's also why, I think, the Kuro is helping the new Mao. Mao also knows the truth and the answer that she came up with is causing her to do what she's doing. She's also angry with D because he knows the truth and is meddling with her (and unknown to her, all the other people with ｎ％Ｉ＝Ｗ) to bring about the end he desires and now she understand what his aim is. She agrees with him but doesn't like being manipulated so she's angry with him.

you're right taboo was what made her crazy, I didn't realize that that skill had become maxed; so she must have got altered to be evil.
though it looks like she's back mostly to normal after trying to fight that dragon again xD lol~♪
I'm really glad~~

I hope her mood's back for real~

on another note, those dudes with the weird quote signs are back xD, or more she went back to them... I need to find when they were introduced~
I don't remember much about them... I was all, 'is she talking to herself? did she go nuts?' but clearly not lol

it looks likely that shiro-chan and the maou are going to try get either get our hero on their side, or try to kill her... probably recruit her though~~ once they find out about her existence that is~♪

Oh, you mean her other "personalities" XD. Yeah, I love the interaction between them. And it looks like "並列思考" (heiretsu shiko) leveled up to the point where she has total of 7 divisions.

This is my guess but I think with how the Maou learned about the elves at the end of 131, she will act to eliminate them and Shun-tachi will lose their refuse and move to the dungeon to escape from both the humans and demons. There, they will run into Kumo-chan and since Shun has "鑑定" (kantei), they will realize Kumo-chan has "ｎ％Ｉ＝Ｗ" and is a classmate. And by then, she will have evolved to Arachne considering her current motivation. That's what I think.