Ghost?

this is story when I was 5 years old. At that time I slept with my sister and my aunt. I slept well until I woke up and I saw lights went out. So in my room there was many candle. But, I saw weird things, there's lady with purple dress stand up beside the door. That imposible if she is my mom. My mom has curly hair but that lady has straigh hair. And imposible too if she is my aunt. I saw my aunt slept well. So who is she? Why she stand up at midnight? And... the thing who scared me is she shaked hand to me! =='

OMG,  I turned my body quickly into wall. But, when I saw the door again, nothing . There's no lady with purple dress shaked hand to me. 

wow.. ghost? Thats first time and the last I saw ghost with my own eyes. I scared ghost until now. And I wonder until now. WHY SHE SHAKED HAND TO ME??