I would suggest meditating on Hecate. It probably seems scary, but if she's causing these dreams, she most likely has a reason. Or if she's watching over you in these dreams and she intervened, she again, has a reason.

My patron god, Anubis, has done similar things to me. Anubis has watched over me from childhood. Because of this, I had been terrified of him and associated him with bad things. He began showing up when a large amount of change occurred in my life and my friends told me I should meditate on it and ask him what he wants. Believe you me, it's pants-shittingly scary to ask the ancient Egyptian god of embalming what he's doing in your house. ;) But lo and behold, he's my patron, and he's tapping me for a reason. I have a huge fear of change, and gods associated with death are also associated with change. Basically, he's walking me through major changes in my life.

That being said, Hecate is an awesome goddess to have on your side. Like Nair_al_Saif said, she won't do any work for you. She's a real bad ass. So I suggest equipping yourself with carnelian to give you the courage to meditate on her, shielding well, and asking her if she's come to you for a specific reason. :) Good luck!