After many more sleepless nights due to random beeping, we identified the source (a bad smoke detector) and figured out what we need to do to replace it.
I begged the Universe all the way to Walmart (sorry, I don't usually shop there but the manufacturer said they carry the model we need) -- please let them have what I need, at a price I can afford and the number I need to buy (we decided to replace all 5 in the house rather than have them go "postal" in the future.) Thank you Universe for making all those wishes come true. I bought the last 5 of that model of smoke detectors in the store and they only cost $12 each!
Now Universe I BEG, on my knees, PLEASE let this fix the problem so there is no more beeping in the night. I can't take it. I am exhausted. My nerves are frazzled. I desperately need a break and I know you can give it to me. THANK YOU!
P.S. You may note an earlier post thanking the Universe for identifying the source of the beeps. As it turns out, our alarm system was also beeping but not because of the smoke alarms. We had two random beeping events going on at once! I wish I knew if there were a Universal sign or message in that!