With any type of relationship (husband/wife, client/consultant, friend/friend, etc.), communication is one of the most important aspects of your relations pip --
First of all, look at it through her eyes: assuming you're in a happy loving happy relationship, she sees that you're at home now instead of an office, you probably wants to spend more time with you. And if she's asking you to do more chores around the house, again, she sees that you're home everyday and she has to go to an office for 40 hours a week to her job. How unfair is that for her?
Secondly, don't send her articles. She's not your blog reader, she's your wife. talk to her. Make her a cup of tea and sit her down, not in a serious, you're-in-trouble kind of way, but just level with her.
For the sake of your relationship and happiness, happily pick up a couple of extra chores, not a whole laundry-list (no pun intended) of stuff you have to do instead of your work. Even an hour everyday (what you probably saved from not having a commute anymore), will get a great deal done.
Sit her down tell her that if just because the physical location of where you work is different doesn't mean that the situation is any different.
Having said that, one of the main reasons that you're freelancing is that you'll be able to spend more time with your family. Because at the end of the day, why are you doing all this anyway? To live life! For this reason, embrace the distractions at a certain point and make sure you communicate with your wife.