What can I do? Legally, isn't this some sort of harassment if boss made my last two weeks horrible?

I work for an assisted living facility where I work as a CNA on a dementia floor. The work flow had become unbelievable so I have found a new job. I put my two weeks in and have made it a week. My coworkers however keep coming and telling me different thing the nurse manager is saying about me. She's just being plain nasty, saying how she's been waiting for me to quit on day. Then the next about how I won't be underfoot with my mother (also a member of management in a different department). She also has been trying to make my coworkers mad at me. All of this is really making my last two weeks unbearable. I have to make it through another week. If I don't I will be forfeiting my 3 week paid vacation payout.