Normal protective friend or OVERPROTECTIVE!!!???

    Okay so I know my friends got a little bit protective after my relationship with Donkey but my friend Em kinda has been going overboard this time. Okay to start off with she and G never really talked much before, the occasional hi or how are you, but now she won't even say that to him. So yesterday I had second block with them (dropped AP History and aid for their teacher now) and G and I were talking about something funny that had happened at one of the debate meets and all of the sudden Em butts in quite rudely and loudly. She didn't know what we were talking about and just kind of angered us. And yesterday there was a presentation on the 3.11 earthquake and tsunami by Japanese students who lived in the area (here's kind of an explanation on how and why they are here) so we headed to the auditorium and it was snowing outside (classroom is in a portable) and I mentioned my neck was cold when the snow hit it so G let go of my hand to place it on my neck for me but Em saw that and put her hand on it before he could, kinda bragging that she beat him to it. I really didn't like how she was holding my neck cause 1 her hands were COLD!!!!!! 2 it kind of felt like she was dragging me closer to her so I complained till she let go and G put his hand there.
      Then the doorways to the auditorium are kind of small so Em cut G off so he couldn't walk by me for a while and she wouldn't stop talking to me so I couldn't talk to him at all. She also pointed out three seats and kinda sorta dragged us down there with her. At that point I sat down and put my head on G's shoulder and turned my back to her kinda. The whole presentation I kinda ignored her cause I was wondering what had gotten into her, and I may have kinda sorta fallen asleep at one point (not my fault G's shoulder is comfy!).
     Anyways, I sent her a message on facebook asking what was wrong, if she had a problem and she hasn't seen it yet so if she doesn't see it by Tuesday (next time I have class with them) I will just talk to her before class starts. My mom and Bub thinks she may just miss spending time with me but if that's the problem I wish she'd just tell me. But I also wish that if that is the problem she wouldn't just make it my job to hunt her down since I have a full day of school and she doesn't. She knows my classes she can always come and say hi or invite me to lunch once in a while when she doesn't work. Also, when I try to talk to her before second block starts she's always talking to someone else and kind of ignoring me so I give up and go talk to G and B (classmate I've known since 8th grade).

I'm just really wondering if she has suddenly become like my father should be acting (he's knows EVERYTHING that happened with past boyfriends) or if she just misses me.