is my house haunted?

So you see the girl with black hair too huh? Dont worry. She is not a ghost, she is a spirit. They were once alive, but after they have passed there souls along with there essence remain. Thats how spirits are born. Tho i forgot the name of this kind of spirit, they are likely to be found in every house. Some are more open to interact with living folk, yet some like to stay hidden. They usualy long for material possesion and to be sorounded by living people so that they dont feel so much alone. They tend to be a bit aggresive, but are usualy harmless. Trying to comunicate with them would be very kind of you and they will certainly keep that in mind, and will try to be less aggresive towards the house folk.
You have nothing to worry, she will not harm you.

How can i contact her? It has been so long since i practiced.

If you want to know more, just send me a mail and we can talk. Okay?

This thread has been moved to Spiritual Creatures from General Info.

"She is not a ghost, she is a spirit."
I thought these were the same thing just different names.

Also there are a number of ways to contact spirits. The quick ways are Ouija boards and pendulums but these aren't that accurate and the Ouija can be dangerous if you don't know what you're doing. The more advanced ways are through meditation and astral projection because they're more accurate but take longer to do.
I doubt she's your guardian but that depends on how you feel around her. Such as feeling protected or a strong urge to go back into magic.

I do feel like i should start practicing again, and when i saw her i felt so scared i couldn't even go up to my room. My step mother didn't know about last night yet, but she said she just saw someone walking around in my room.

Maybe it's a sign that you should start practicing again so you're ready to banish or help the spirit. If you feel fear then maybe it's best not to contact her until you feel less scared and more ready.

I'll try to relax. Will offering water or something with candles help?

Yes and also burning incense around the house if you have any can help. I normally use sweats as offerings and bury or throw them out when I can be bothered but I'm sure the ghost will appreciate whatever you do as an offering.

It sounds like she's scared, too! Just be nice to her and the others. Just sounds like a routine haunting. If there are any problems, let me know, but it really just sounds harmless. They may just want to talk.