Questions and Answers
Tenormin (atenolol) is a beta-blocker and like nifedipine, used to treat hypertension. Individuals with decreased renal function (at 80+, your aunt is most likely in this group) will excrete it more slowly with consequent increase in blood levels - this leading possibly to increased incidence and severity of side-effects. At high doses these include, among others, insomnia and depression.
It would indeed be appropriate to look at possible change in dosage, amount of each dose and timing, elimination of one or both with possible substitution with an ACE-inhibitor.
Another possible candidate might be the Restoril (temazepam) although if it's given at bedtime, shouldn't be around by next afternoon.
You don't mention any dosages, but where this is extremely important is in the use of prednisone which in long-term use may be involved. I would guess your aunt is on a dose which may produce osteoporosis since she has been prescribed Fosamax (alendronate).
Nothing else you mention is likely to be involved.
Best wishes to you and your aunt.