Is typing the same as talking?

I talk to patient's and doctor's offices all day every day and when I get off work the last thing I want to do is sit and talk to her about things I don't care about.  Something her boss may have said to her or something another employee did on her job did.  She hates it when I can sit and email back and forth with my sister all day long.  I see my sister about once every 2 or 3 weeks but I see my wife daily and I just don't want to sit and talk to her the minute I log out of work.  Today she walks in the bedroom where I'm working and jsut stands there behind me.  I was between calls so I was playing on my phone.  I turn around and she's just standing there.  Again, just standing there saying nothing.  A little while later I was typing an email to my sister and she comes back into the room and says, "wow, you really have a lot to say to your sister but nothing to me after you get off work."  Typing is not talking last time I heard.  How much conversation does a couple need to have in order to stay connected?  We've been together almost 20 years and I just don't need to be in constant communication with her from the time I get off work until the time we go to bed.  We'll be watching a TV show and she'll turn to me and say something like, "what do you think will happen next?"  My response usually is something along the lines of  "just watch it and find out." then I go back to watching the show.  She takes typing is equal to verbal communication.  She doesn't have any female