Lorazepam is indeed a strong drug...It can get you tired... I can see why she wouldn't want to take them at work...I have taken them before myself..
Even though I cannot diagnosis your Mother's attack, I can tell you that three times I went to the hospital with panic attacks...It is the stress of the situation...Sometimes you can think of this problem and the more you think the bigger it gets...You can create your own attacks...I had the deal down where they put the instrument down your throat to see if your reflux action was OK...I think with me and possibly with her that worry can be her worse enemy...I swear that you sit and wait for it to happen and then when it happens you help it grow....Panic is the perfect name for this....
Mine was caused by terrible stress.....Once I could relieve this it took away the attacks...Maybe give her time and help her...Is she nearing Menopause as this can cause it too....
If I can help in any way I will.....
Caroline