Dear Wayne, thankyou for your question.

Your wife is experiencing normal nausea and fatigue. I am including some information here that will help you understand more as well as a website which gives information on what you can expect as you and your wife go through this time.

Gassiness and bloating are also common but unpleasant experiences at 9 weeks.Morning sickness can happen also.

Your baby at 9 weeks is just beginning to grow and is about an inch long and weighs less than one ounce at 9 weeks. (check website for more information on this,it's incredible how the baby develops)

The size of the uterus is about the size of a cantalope at 9 wks. The mood swings and anxiety may increase at about 9 weeks . Many women have crying spells over little things and there is an increased number of hormones going through your wife's system. This can lead to fatigue which can affect moods.

Pregnancy Week - 9 Weeks Pregnant - Pregnancy Week by Week

Early Signs and Symptoms of Pregnancy (nice chart here)

And last but not least some help specifically for your understanding :

Fathers' Forum Online - The First Trimester

Hubbie Help: Simple Ways A Husband Can Help A Pregnant Wife

If you have any other questions,just ask. I am here to help you.