Snake Dreams Meaning

Finally, I found this forum!

Just want to ask about my girlfriend's dreams. This started since she was in high school.She said that there's not a week that she would dream about snakes - big and small - and there always many of them. She had seen them crawling out of walls or on the floor. She is afraid of snakes by the way and those who have skin and features of the snake like salamander, catfish, etc. She said that she's always escaping or avoid touching the snakes in her dreams. Some people said that snakes in dreams means money. Is that true? If not, what does it mean then?