I think you had an abnormal melon that might have been effected by the hole that had been chewed into it. I always look for a dull sheen on the outside and ALL of the nearby tendrils brown and dead. Not just one. The first melon of the season is always the hardest one to judge. It's kind of like a sacrificial melon.

Hi Missouri..Sorry about your peps.. Have you done anything different than you were when the they were perky? How bright is your north window? Is it obstructed or unobsturcted? Since north has the least light, and if there's buildings/trees blocking the sun, it means they're getting little light..Though Peps can survive in lower light conditions, IMO they do best in medium light..for instance an east window or higher. What type of soil are they planted in? What size and which material are pots? Peps are succulent plants, (they retain water) therefore a well-draining soil is needed..My peps live in a west window, well=draining soil in clay pots. A few are in plastic though. One thing about Peps, though they require soil to dry between waterings, they dote on humidity. If possible, take to sink and hose foliage (try not getting water in soil) Do your pots have drainage holes? It's important they do. Either your soil is being kept too wet or too dry. Before watering, check soil by sticking finger deep inside. If it comes out moist, then wait a few days, recheck..If it comes out dry, water..Check every 7 days to begin with.. 2 wks is a long time between waterings..Unless you're using the wrong soil, or pot size is too large, or both, that could be the problem leaes are wilting. Peps do NOT like to be overpotted..they seem comfy cozy when living in a small pot. Keep us posted, Toni

if you insist in a fanch pot ... then you should use a pot in pot system ... finding a plastic pot that fits inside the pretty one ... so if need be.. you can take it out when you need to ... i also wonder about when the last time you repotted... potting media does wear out.. leading to watering issues ... and the plant dies look a bit large.. for the little-ish pot ... ken

Pungent stink isn't a good sign. I would pull it out of that pot and discard all the smelly soil. Then repot the good stems. Toss that rotting stem. The rest looks okay to me. You can also take a cutting and root it in water now as a backup. When you repot, don't water for a few days. I have a few of that type of peperomia. When I water them, I water the soil thoroughly letting all the excess water drain away. Then I let it dry completely before watering again which is on average once every 2 weeks. I live in a dry climate.