Thank you for sharing your story on stress. I enjoyed your story from this point of view. The following are merely suggestions and style choice and is meant as positive feedback.
1. This mom seems like she's dealing with some major anxiety not just everyday stress. The panic attacks and trouble breathing. What is causing her so much stress if not an illness. If she is suffering from true anxiety I would suggest not giving her alcohol. I have learned the hard way that alcohol may temporarily relieve symptoms of anxiety but often prolong the feelings of depression (which often accompanies anxiety) for days afterwards. or maybe just make reference to even thought she knows she'll feel it tomorrow, the fruity taste was temporarily calming or something like that?
2. Technically I only found a few potential errors.
a. there is an outside quotation where there is no dialogue: She wanted to sigh, but she still couldn't catch a full breath."
b. He up snatched the backpack - should this be snatched up?
3. At the end when she's relaxing and remembering why she had a husband and kids, it would be lovely to hear some endearing qualities of each of them to wrap up her evening.
Thanks again for sharing - it was quite easy to relate to :)