Ghost Girl - Mixed Feelings

Now I have only lived at my current residence for about three years now and before this I have had previous encounters with paranormal activities and such, but never one quite like this. I know only a few basics about my current house, that a girl late teens to early twenties (17-25) died here. I have heard that it was of an overdose of prescription medication although details are hard to come by.

Either way I know that soon after her death the people who lived with her (as far as I know it was her parents) moved out of the house with little warning. This may not seem strange, but coupled with the events I have experienced I think I can see why they left.

The first encounter was the very first day I moved in, we were unloading everything as quickly as possible, just setting it into the rooms. At the time I was to inhabit the smallest room of the house, which was her bedroom. The room itself was colder than the rest of the house, odd since it was closely connected to the heater. Every time I entered the room I got a chill down my spine and would turn, expecting to find someone watching me from the doorway as if to ask what I thought I was doing. I shrugged it off and unpacked, thinking I was just tired.

A few months after my first experience I was doing laundry in the basement, I was on my way up the stairs and heard someone specifically say, "Wait..." And lay a hand on my shoulder. I was in the house alone and I was rather terrified. The pressure on my shoulder went away and I hurried upstairs.

Later that night I awoke, thinking I heard someone speaking. I put it off as my rabbit making noise in his cage. The next morning my mother commented something strange. She said that late at night she had heard a girl talking, she thought it was me because no one else was in the house that night. She looked in on me, fast asleep and tried to shrug it off. When she thought about it again, she said it very much sounded like it came through the vents that run through the house. My sister, my mother, myself and my friends have heard this voice on occasion from the vents, just talking, the words unable to be distinguished.

From time to time I feel her watching me and I say her because the presence feels it, sometimes I smell shampoo, like her hair is by my face. I was feeling irritated and upset one day, and I lashed out at her presence when she tried to comfort me, Yelling "go away ___" the __is for her name, I recall yelling it and I recall stopping and saying what? But the name disappeared from my mind as quickly as it entered. She's left me alone since then, still there but ignoring me, but sometimes I can feel her loneliness when I'm close.

Has anyone else ever had this happen? I was a little skeptical at first, but I honestly think she's here, especially after all of this and more that's happened.