Freudian Interpretation

I was taking a shower and I noticed the head of a very small green snake in a round vent in the wall. I became alarmed. The snake started to slither all over the house. As it come out of the hole in the wall it was actually quite big. And only it's head was green. The patch just below it's head was a read and gold tartan. As it moved around the house my mother was there telling me not to worry. I had an idea to get a lawn edger (like a spade) and cut the head off the snake. But as people (men I think) came in to help me deal with the snake it disappeared into the walls of the house. Again, my mother told me not to worry.

Important notes for the dream: The house was a version of my childhood home; my mother passed-away just over two weeks ago; I have to look for a new roommate because my partner is moving out (but we are not breaking up); work is hectic and unstable.

Can you please tell me what you think my dream means in the Freudian terms of wish-fulfillment, condensation, symbolism, censorship, distortion, displacement and secondary revision?
Additional Details

I should probably add that I am not worried about this dream.

Also, I may not agree with everything Freudian but I am interested in how he would interpret this dream.