This may be due to nutritional deficiency, however this is more likely due to the recent stress that she is having. Stressful life events such as the one she is having at present may cause hair loss. Therefore you need to have her hair examined by her doctor to find out the exact cause. The good news is that in both these cases with elimination of the underlying factor, which may be stress or nutritional deficiency, her hair will grow back normally and this is temporary.
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