The one where she pretended to forget her purse and left it so that Valentine would take it with him as he talked with her father.
Oh, you mean she reacts to Valentine's conversation with her dad while she's not there...
Well, she is literally an intelligence officer. Besides there may be more than one reason behind that. And she snoops a lot. She stick her nose to wherever she wants to. Valentine is already aware of that. And she sure makes us suspicious. Though I need much more than what we have so far, to call it malicious.
It was 100% her fault. She instigated it because Viri told her that he used to enjoy fighting. She saw this as a potential bonding opportunity and that's why she does the whole pantsless bullshit later on.
Here's the actual beach incident that occurs after the says "actually three"
Naaah! The fight breaks out no matter what. And I don't see Elspeth's words as taunting, more like intimidation. But even if it was taunting, so what? Those guys were high on cocain and Elspeth had Valentine's back. You may call it a 3d chess and you very well may be right but...
She's known him less than a year and they aren't very close. There is a scene where Valentine tells her that he's surprised that she has a photo of him in her room, since he thought they were more both friends of McNabb's than they were of each other. He even says that he could count on one hand the number of times they hung out one on one.
So it's very much not okay for her to be secretly recording him, accessing his private files, sabotaging potential relationships (Katie and Kana), or anything of that nature. That's all stalker shit. All of it. You don't get to say that it's totally fine because you don't believe she has any malice. She's absurdly entitled to the point where she doesn't believe others have a right to privacy because her desires are more important than theirs.
WTF???
SHE DOES THIS SHIT IF THEY AREN'T EVEN DATING!
Dude, seriously... play the other routes sometimes and see what she's like.
First of all, we don't know the women digging Valentine's past are doing that for Elspeth. They are doing that for someone, and one of them says "there's an other interested party". Besides, Elspeth thinks Anastasia, if that's in fact her of course, is dead and Sara isn't even in London. And she genuinely feels hurt for Anastasia's death. One of the parties may be Elspeth's dad, but I really don't think it's her who hired those two to dig up on Valentine. After all, Sara was in the Royal Army, and her abilities should be quite well known for many people in or in business with the British Government. And to tell you the truth, I think the other party is His Majesty's Government, and they are digging because of Valentine's citizenship application.
Besides I don't know who Katie is, but Elspeth never does anything to sabotage Valentine's chances with any other woman. She even helps Viridiana to open up to Valentine about her feelings. She keeps reminding people that she wants him all for herself, yet she doesn't expect Valentine to go monogamous with her just because they finally shagged. She even gave Valentine "the look" when Kana showed up in the Centre.
Back to their cinema date... Valentine talks with either Zaina or Davis, and he says "she's overbearing, smug, distant" and Zaina/Davis adds "dangerous". And that's true to the teeth.
And after the fight in Mallorca, Valentine forces her to sit down and have him take care of her nose bleed. He says: Forcing somebody into something for their own good? Who could have normalized that in our friendship?
So it's not just Elspeth who is overbearing and Valentine is not just aware of that, but also participate as well.
And about "even when they aren't dating" thing... A friend of Elspeth died because she didn't force them to get help, when she could. She told that to Viridiana when they were discussing Valentine on the beach.
About others' privacy thing... SHE IS AN INTELLIGENCE OFFICER! Intelligence people have a need to know drive. They gather intel because knowledge is power. You can't blame a genius, who already has inherent curiosity, intelligence officer, whose job is being curious, for gathering intel, about someone they love/care.
BTW... May I remind you Els-Val pillow talk? She confesses Valentine the exact moment where she was "smitten" about him. They were visiting a museum and Valentine started explaining an artifact, in painful detail, to Amrit. So they know eachother for a year, and though he already made an impression on her via McNab, and how he treated her once they've met.
I know she is suspicious and dangerous but I really don't think she's a danger for Valentine, as she already told Viridiana. I already talked here about "i hope she didn't hurt Valentine personally" in multiple occasions. But we need to wait and see how STWA will untangle the story for that. But Elspeth is my favourite LI until I see a real reason to discard her.