Re: Russian girl... very unreceptive... what to do?
There could be cultural differences, but am completely unaware of the specifics so I can't help there. Or maybe her English isn't so good.
Assuming she's Americanized and speaks perfect English I would tease her about it. Mention how she can't expect to make any friends if she just sits there trying to look cute.
Also think of your attention and touch as a reward. If she doesn't engage in the conversation, even if you ask questions, then remove your attention and socialize with other people in front of her. Show her the funny social guy and ignore her which will create this tension. You already opened her so this will make it easier for her to re-engage you if she wants to. Then contribute to a conversation with her, but be a little short with her. Like you are turned off by her for not engaging in the first place. This is where having standards and showing her that you are willing to walk away is a powerful thing. According to Mystery Method, to convey that you are willing to walk away from bad behavior is an attraction switch.
"All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power and not truth."