A DNA analysis can confirm if it is, but it very much looks like it's alpha minor and with a child who is known to carry alpha minor, it just makes it even more likely that's what it is.
These all back up alpha minor; Low Hb, low MCV, low MCH, HbA2 on the low end, HbF of 0. The deficiency of alpha globin will cause both a low HbA2 and low to no HbF.
G6PD does not cause additional anemia to whatever anemia the thal minor causes. L-methyfolate is the main recommendation for alpha thal. B-12 can also be of value.
A consideration for both G6PD and alpha thal is favism, the sudden breakdown of red blood cells caused by exposure to numerous substances, such as fava beans, but also medications containing sulfur (Bactrim is one) and all sorts of chemical fumes. We have a list of some of these at
http://www.thalassemiapatientsandfriends.com/index.php/topic,3410.msg34830.html#msg34830Many alpha carriers find they need to avoid exposure to items on this list.