well think about it
what is the sole definition of the word "Bind" ?
"adhere: stick to firmly; "Will this wallpaper adhere to the wall?"
create social or emotional ties; "The grandparents want to bond with the child"
make fast; tie or secure, with or as if with a rope; "The Chinese would bind the feet of their women"
wrap around with something so as to cover or enclose
tie down: secure with or as if with ropes; "tie down the prisoners"; "tie up the old newspapers and bring them to the recycling shed"
oblige: bind by an obligation; cause to be indebted; "He's held by a contract"; "I'll hold you by your promise"
provide with a binding; "bind the books in leather"
form a chemical bond with; "The hydrogen binds the oxygen"
constipate: cause to be constipated; "These foods tend to constipate you"
something that hinders as if with bonds"
wordnetweb.princeton.edu/perl/webwn
it probably does have something to do with magic or voodoo at-least in the tense you're asking about - the most relevant thing i can think of when it comes to what she did - all the piercings & a snake tat on her head and she told you binding - something with 'magic'