ok first, don't take the this girl shit serious, if you are a good PUA u should have the "this girl" because just having any girl is easier the having that certain one. If this makes sens 2 u.
Next the problems are in first you confidence. You might usually be a very confident guy but when u taked to her it didn't seem like it.
Never do this again: Excuse me, Hey!
This is a DLV u say that 2 someone u are disturbing on the street and u want to know some directions or something like that.
Next: So… You’re just enjoying your lunch?
This is like you don't know what 2 say and u'r totally intimidated by her. So this is the second DLV.
But the worst was this: So, did I or did I not see you at Knott’s?
With this you are actually asking her what u saw. So your asking permission if she can be in your memory (i'm a bit 2 harsh here but u get the picture?)
This is how u could have done it:
Hey! I’ve seen you around a lot, and I just had to meet you. I’m ....
U did the name thing, which if her name was that different i wouldn't have put it in, because then you're just like every other guy. And from there u should have went into a DHV. Since you already went in with "I just had 2 meet you" this is how u should have continued.
Help me get 2 know you better, and i don't mean the outer you, but the real you (or something like that make it sound deep it works better this way). Tell me 3 interesting things about you.
Then later on u should have told her: U know I saw u back at Knott’s smiling at me. (not English so might have fazed it bad)
Now 2 what u could do. I'd go talk to her when she's with her girls. And using this alfa way of interacting just talk 2 her friends. Beg her a bit then give here some attention. But be fun to talk 2 and try leading the whole conversation. If u need more help pm me
P.S. don't pretend u just saw her or things like that just go in, and be alfa, then bring them 2 your friends. Or have your friends meet them when you're already in set.