My Mom has internet addiction, what should I do?

[Tina Tuna]

I think my Mom is a internet addict. This started back in 2009, where she bought a PC, she started going to blogs and talking to people and that was perfectly fine. Then she kept talking to this friend on that website (kind of like facebook) and introduced her to playing video games. She started playing mini-games, like Farmville on facebook. For a while she was into photography and even bought a very expensive one. She was into cooking, like searching for recipes online. It was great. But I then I noticed she's using skype to talk to this man. I see she's been talking to him for around 5-7 hours.
That man invited her to another friend, who invited her to play MMOs and MMORPGS. She began using something similar to Skype to talk to groups of people at a time. She slowly stops doing photography and isn't interested in cooking anymore. This is when it goes downhill.
From late 2010 she doesn't talk to me as often and prefers to stay at home. She's talking to more and more people. She doesn't even give me trips up to town because she's 'busy' but she's really just playing games.
Around Christmas 2011 until now, all she does everyday is get a cup of tea, go upstairs where her computer is and talk to people. I see she's been talking to the group of people and always talk to this guy called 'Guard'. The emoticons and the messages they send to each other shows that they are in a relationship. They call each other 'husband and wife'
So now she's cheating, addicted to playing games and the internet.
Sometimes I try to have a serious talk about her addiction and she starts getting angry saying she has no problem. Btw, she's 42. She doesn't cook the dinner until I tell her to, which is an excuse to keep playing World of Warcraft. She plays everday from 12 pm until 3-4 am or even 7 am occasionally.
My grandparents and uncle think she needs help and we're really worried about her well being. I'm only 13 and I don't really think I can help but I want to try. So what should I do?


TOO LONG DIDN'T READ:
My mom is addicted to the internet and is playing World Of Warcraft everyday. We don't talk as much,
the only time we talk is during dinner and collecting me from school. My family is worried and want to talk about it, but she gets defensive. I want to help her addiction.


Yes, I have a huge description. Deal with it.
Guys, I've been thinking of that and I know she would be mad. I don't want her to be mad :c
Mico- I've been over to my uncle's house and she was on her own for 3 weeks. She just keeps on playing on the computer and the only time she went to get groceries were 1-2 in that 3 weeks. Thinking of that just makes me mad, she doesn't understand how unhealthy this is.
Yes, my mom is really stubborn and I am stubborn too, I want to help her without getting into a argument as we would be yelling at each other soon enough- we have short tempers. I want to sort this out in a calm and 'adult' manner even though I'm 13 Haha.

[Reece]

Unplug the router.

[Dave]

turn off the power?

[Mico Pachacos]

Everyone can leave the house for a few days to weeks make a plan of it and see how long it will take to notice, it will be a valid excuse to show she has lost touch with reality and doesnt pay any attention to the household anymore. but being a mother I can guess she's stubborn as an ox there isnt too much info to give you can try and find a friend that plays and make an account and troll the heck out of her for some actual attention. the family can pitch together to wreck the computer.