Kitchen and backyard?

[TonySG]

I was downstairs in the kitchen at my Mothers house which was also my childhood home. The kitchen leads out to the backyard (which is small). The backdoor to the yard was wide open. There was a small poster on the wall in the yard about a book which I wrote called 'Emotional Abuse'. A man drove in through the back door and parked his car in our backyard. The vehicle almost filled the yard. He then went and started reading the poster. My mother went to see what he wanted. But she went out of the front of the house, all the way around to the back. Instead of just going out the back door. I couldn't quite figure out why she did this?!

Any ideas on this one, please? Thanks