How do you know if someone is using Santeria against you?

I'm in college. My mother brought a Babalawo to our house once and one time she took me to a Santera in Mexico. She is also good friends with a Santera. (said Santera once told me I could be a Santera too) So, I'm not too unfamiliar with the idea of Santeria. There is a girl from Mexico (i say girl but shes actually like mid to late twenties) that had an attraction to my current boyfriend before we started dating. I really love my boyfriend and I want to stay with him. This girl doesn't like me and I can tell. About two months ago she sat behind me in a meeting and pretended to touch my hair saying "oh its so soft." I think she grabbed a few of my hairs and did something to them. After that me and my boyfriends started arguing more frequently. A few weeks ago, she took a picture of me and my boyfriend, which i thought was strange. We were at a party but no one else was taking pictures. And she did touch my hair again that night. Last night she took a picture of us at a party again and left quickly after wards. Me and my boyfriend got into the biggest argument and broke up. Is it her or am I just too superstitious? Please give me some serious answers.

The way I could tell was the chicken blood on my door.
I just reported the moron to the school authorities and they didn't attend anymore.

/.\

You usually start hearing Sublime a lot more.

It sounds like she used your hair and the picture of you and your boyfriend to cause the breakup. Never let anyone have a chance to get any part of you ( hair, nail clippings, etc. ) These items can be used against you and bad things will happen. As far as the picture, she probably used it to make the curse/spell more potent.