Need a solution!

I am the type of person who needs answers and if I don't get them it is so frustrating. I need a private eye is what I need and I don't have a million lying around to pay them. Dang it!! Well here is the deal. So I find out the she devil is staying longer. The accuse is that her internet provider just shut the doors to where she lives. Okay what ever! I called a provider down there and nope that is not true. Why the hell does my sister believe her all the time. She devil has been here for 2 months now. From time to time I do the search engine and look up things but I can never find things. A while back I got her last name from my sister and then again nothing. Then I found out who was registered to her vesicle. A totally different name then she has. So I looked that up and the chick is 53 years old and she devil doesn't look this old. So I did some more searching using that last name and boom there it is. So this is what I figured out so far.... Her mom must own the vesicle she drives. I cant get any address or another info unless I pay money and well I don't have that right now. Why do I worry so much? This chick is total evil. She lives off my sister. She lies and makes my sister lie also. Dang I need a time out! Bye!!