So, having been called on being a 'sunshiney' overly-helpful knowitall twice in 48 hours, Dinah felt like she had to actually think about what Ino and Arthur had accused her of. Before a third person told her off for trying to help.
After a lot of wrangling, back-and-forthing, mental list-making, and consideration, Dinah decided that:
Ino could weirdly blame Dinah for not being psychic enough to anticipate her finding out about Triela's medical condition, and then getting upset about it. But if she wanted to throw a screaming tantrum, or glare every chance she got? Dinah didn't have to show up for it. Arthur, on the other hand, was kinda right. Half of what Dinah had said to him had been aimed at what she'd thought was his arrogant attitude about what Morgana could do. But Morgana could look out for herself, and hadn't asked for Dinah's back-up. She owed Morgana an apology for trying to speak for her if it ever came up. Maybe she owed Arthur an apology for assuming, and the insults, but she thought the PMS comment that inspired them canceled that out. Anybody else she'd helped or tried to help lately, it was going okay for them, and it wasn't like she was the only one helping them out. Or like they were going to depend on her. The new kids would find their feet in a week or so, and then everyone could progress to jumping off buildings with her. If they wanted to.
Or, try to airwalk like Karla had taught her, like she was right now. Shoes over by the door, eyes shut, humming to try and concentrate.