My daughter moved into her house in February within a few weeks strange things were happening.. her son who is 2 keeps talking too someone and says it is barbara , we are not aware of any barbara . At night he wakes up absolutely terrified and screaming this never happened in her old house.A few weeks ago my grandson was stood next to the window watching television when he dived across the room , my daughter said it was though he was pushed violently , he landed on his stomach and she thought he was unconsciece , he couldn't catch his breath.. when she calmed him down he kept saying barbara pushed barbara pushed , all different things keep happening, e.g. doors slamming ,like slight wispering , footsteps on the stairs obviously she is frightened ans not sure what to do...

First try to catch any of this stuff using a tape recorder or video camera. Doors closing and creaks in the home are normal for any home. Take it from there and gather some evidence. Also she can look up the records and see who the previous owners were and if a Barbara is in the list.

I agree with califdad .
Also keep a notebook and write down what happened and at what time.
Keep us updated.

Mags
First thing is it is a well known fact that kids are more sensitive to seeing and hearing spirits. If a child is telling you they have an friend you cannot see, they are most likely playing with spirit children. I was able to see spirits all the time. Mostly when I was looking out windows I could see them standing behind me. Also I could see and talk to them as they portrait themselves in mirrors and bases of table lamps. Most homes have spirits,most people just cannot see or hear them.

Okay,in many places or even every where there are entity's , energy's...
My idea that comes up in me now about this , is that barbara is the spirit of a child that maybe don't know yet she's dead.
Or maybe she don't know how to cross over.
Seek for help.
Search for some one that can comes in contact with here.
Ask your son what he knows about here.
What do she tells him?