Sesshi eventually determines they've worked as hard and as long as is productive this first day, and as she dismisses them asks Chihiro to stay behind.

Very well.

Once Elieyha and Hisame are definitely out of hearing range: "So, which of those two are you here to watch?"

"The jinchuuriki."

"Suspicions about her?"

"Not in specific."

"Just to watch and report, then?"

"Yes."

"You're a good asset for this team, Chihiro. I think your superiors are being overly paranoid - especially since they aren't just asking me for reports." And since they think Elieyha's the threat and not Hisame, who practically dances around with a 'flight risk' sign.

(If Sesshi had to place bets on which of her students would spontaneously decide to go on a murder spree, she wouldn't be putting her money on the jinchuuriki.)

"Noted."

Of course, Chihiro's likely to report on anything blatant for Hisame, anyways...

"Any instructions for Hisame?"

"No."

She nods.

"You're all good kids. You can go on, now, if you want."

"Very well."

And so she goes.

Hisame gets bored within a few days and decides the team - sans sensei - really, really needs a girl's night out. Some kind of bonding experience. Something.

"Burning down the town literally or metaphorically?"

"I think Chihiro would be unhappy with literally."

"Alas. Relatively non-destructive debauchery it is, then."

"Hm... Threatening Sakura would be a team bonding experience but is somewhat the wrong tone... We're legally allowed to drink, now, and Chihiro could use some fun..."

"I'd pass on partaking myself. It might be hard to convince her."

"Eh, it's also not that interesting... Hm, debauchery she wouldn't object to seems hard... Don't think I want to do pranks with Naruto..."

"...Spa day?" Elieyha suggests. "Hair, makeup, nails, and so forth?"

"Not my thing at all."

"Not any of ours, really."

"Maybe we should just bond over scaring off my brother's would-be paramours."