hey mate,
its quite easy actually.
But first, you should understand something. Most of the pua material is made to do two things: help you conquer your fear of approaching and change you into something that women might find attractive, to build your confidence, etc etc.
Most beginners of pua and also most women who dig into the stuff believe that the material is made to change something in the victems. They think that the routines and the openers and the whatever the fuck is supposed to 'hypnotize' them, changing the way they look at you. When you look at it like that, from a woman's point of view, with a no bullshit mindset, the stuff is pretty ridiculous. If you really think that most of the material is made to change the woman, you are wrong. That is the reason why she thinks about those guys as losers. Also, most beginning pua have the nasty habit to be totally in their own world and in their own head and they forget to empathize with whom they address. They are so busy remembering their routines, lines to say or subjects to address, that they totally look over the mental state of their target. So it usually goes like this:
you: hey, i want your opinion on something: do you think white socks are cool?
she: (laughs, and you htink its an IOI because you dont see how she seems to be upset about something, but she only laughs because of the stupidity of the question). yeah, i think they look good on 70+ senile men, but only that category.
you: (thinking that you truly broke the ice), hehe, yeah, yeah. So, you wanna grab somthing to drink?
her: uhm, no.
you: why? (trying to figure out her motive so you can think of an appropiate technique or reply)
her:(totally not in the mood, and she wants to get rid of you) its not my day really
you: (oh, its only that, lets get some cocky funny shit here), oooh really? But that is no problem because i can really make your day!
her: heh, yeah, and i have a boyfriend
you: (aaah, the boyfriend thing, i have a reply on that one i found in some book by some dude). Well, i had a message fromt he boyfriend police and they said you need a new and better one.
she: i dont think so. i really have to go. bye.
This is a bit exaggerated, i know, but when you look at it this way, its stupid.
So, what to do about it? Well, like i said before, its fairly simple. If you have the balls for it, you just tell her the truth. If you ever get caught on doing a routine, you dont really have anything to lose anymore, right? So just bluntly say the truth.
her: hehe, nice try. Isn't the following part of the routine you trying to isolate me?
you: (you have been revealed). Aaah yeah. You got me. I am sorry for using something silly like that, but i do think you are very pretty and i would like to get to know you better.
her: but why didnt you say so?
you: well, to be honest, i dont really know how to start talking to girls, it makes me nervous, so I just try stuff out.
her: well at least that is honest. I like that, but I really can't. My mother is quite ill and I dont feel like it.
you: (remembering that since you have been honest, you most likely will get a plain honest reply from her. So you look at her and she really does look a bit troubled. So you are not going to be a lame ass) Aaah i see. I can imagine it must be horrible. I hope she gets better fast and fot what its worth: have a nice day.
About the girl with the book: she doesnt know that you are into PUA but you do know she doesnt like it and she probably knows most of the material you know. Again, just be honest about it. If you happen to see her again, but honest about what you want. Also, this is probably daygame, so be honest but socially acceptable honest. dont go: i wanna fuck you at the coffeeshop. go more like this:
you: hey, i remember you from the other time. You are the girl reading men's books

.
her: hehe yeah. but i cant remember you...
you: that is ok, i get that a lot. Say, you look like an interesting person. I would want to have a coffee with you. Got some time?
her: like, right now?
you: yeah, i am pretty bored at the moment and this might be fun.
her: yeah, ok, but i only have 15 minutes.
you: that is ok. i am going to sit right over there.
her: ok cool, i ll join you when i got mine.
Something like that. She might also refuse for about any reason, and that should be ok for you. If you see her again at some point, she frequents the coffee shop, and you can say hi again. Dont be pushy, just be friendly. As a pua, you can take a 'no' like a man. If you have more questions, shoot.
i hope it helped
cheers and good luck