Yeah, totally, it's your fault. You should own better equipment.

Now is your chance to put a solar roof on your Ute so it will never run down.
I'm a smile sweetly and "Yes dear" kind of guy. It pays dividends for me. I'm sure that she knows that she owes you double. One for toasting the battery, and two for not having managed to turn the Ute and float around in the first place.
The toasted battery might be a good excuse for a fancy charger. Just saying...
Sorry about the grief and the absolutely cactus battery. Personally, I hate losing batteries.
All the best,
Peter