I wanted to add my Mother used to make awesome jalapeno jelly.....is that what your Mom was trying to make ?I water bath the jams, juice, and fruit. Been doing that for years. Great Grandma used wax for sealing jams (which used to be standard). Grandma used water bath and lids because to many jars of jam would mold that way. With water bathing she very rarely had a jar not seal and no mold issues.
My SIL made tomato sauce a couple years ago. Didn't sterilize the jars. Didn't add acid to them. She thought you just had to add a tablespoon of vinegar to the water in the canning kettle to raise acidity. She ran them 5 minutes. My brother refused to eat it since he grew up with good canning practice. I guess it was a huge fight. Mom said the jars sat on the counter for a few months. Then the seals started popping from pressure. It was stupid. She'd asked my mom how to do them before starting because it was her first try canning and ignored what she was told. I almost got her a blue book for christmas that year.
Mom called me about 8 times yesterday because she was making pepper jelly for the first time, wanting me to keep looking up the recipe and canning instructions. Mom was worried the vinegar wasn't enough acid.
My uncle and I have Mom using extra acid in all jams now, too. Even on the fruits that don't need a little extra acid. Fresh lemon juice. It helps retain the color of the jams better.
Jellys and jams have so much sugar that they can be sealed with parafin, and there is no need to water bath if you have molten lava jam or jelly going into hot clean jars & seal instantly with hot parafin as you mentioned Grandma did.
I used to,
I even saved the parafin discs, washed of jam/jelly & put away in a coffee can under the sink to melt down again when ever needed.
No need to throw it out unless it gets really soiled.
Jalapeno jelly, looks like mint jelly & is excellent on meats, such as porch loin or lamb..................but it is super gross on a pea nut butter sammich !

