You didn't show the vintage but that isn't important based on the other information you posted. That is a Moulin Vent from a producer whom I've never heard. In general a Moulin Vent should be drank within 7 years of the vintage. So even if your mother and yourself have impeccable storage conditions that wine is likely dead long ago. It's more of a sentimental keepsake at this point in my humble opinion.