If Sam were anyone else, Samantha would hate that look. It made her feel naked, in a way that she would never be accustomed to despite all of the years she'd endured that look from him. It was the look of someone who knew her better than anyone else, and reminded her that as much as she often behaved otherwise, there was at least one person in the world that she trusted. With everything, and this information specifically.
She hadn't been keeping this from Sam. At least, not intentionally. What had started as a simple curiosity that she'd followed to its natural conclusion had quickly become a full blown recon operation, and before she knew it, she'd gone full spy almost without her realizing. Not the most normal way to go about meeting someone, but then again, if anyone would understand her methods it would probably be Barton.
While Natasha and Samantha arguably had a little too much in common, the big one was that they both had best friends who knew them inside and out. Sam had been that for Samantha, but Clint? He'd always been that for Natasha. As much as Samantha had been grateful for the fact that she'd been able to take this journey with Sam, it was hard not to occasionally feel the gaping hole in the team where Natasha's partner should be.
To say that she'd been keeping this close to the chest for awhile was generous. Awhile, give or take a month. Samantha hadn't really planned what she was going to do when they found him, and what ended up happening was that they just watched him. Not in a weird, stalker way, just... a casual observance. To make sure that this guy was, in fact, the Clint that they were looking for. While it tended to work out more often than it didn't, reincarnation was never a sure thing, and it wouldn't be the first time that a reincarnated hero got stuck with a real world villain.
So she'd been following him. Tracking his movements, observing him in his natural habitat, generally lying in wait. It was a complete role reversal from Widow and Hawkeye's former life, when Barton had been the one hot on her trail. Jack Strange, uncle of Holly Strange. Such an obvious thing that now in hindsight, Samantha kicked herself for not figuring out sooner. After a month or so of just watching, she'd deduced that he was not any kind of threat the Avengers would have to eliminate instead of welcome, but she also hadn't made any kind of move to reveal herself.
"Can someone be both?" Samantha's lips twitched in a smirk, having turned around to rest her hips against the edge of the counter and cross her arms in a similar fashion as Sam's that might look like a stand off, but it was really just the two Avengers meeting each other halfway. After everything she'd observed of Strange in the last month, her doubts about his general character had greatly lessened, but she still hesitated now, for reasons that at least Sam would understand. She wasn't a fan of new people. "His personal life is..." Brow furrowing, Samantha's level of discomfort at this topic of conversation and the vulnerability it came with was plain as she sought the best word for it. "Messy."