Prolapsed vent

Greetings, noticed our 2-2.5 year old buff Orpington had a prolapsed vent this evening - first time experiencing this. We caught it early, she had laid an egg earlier today and was still pecking and moving around with the flock.

It was huge so at first thought she was egg bound too. Soaked her in a warm epsom salt bath, and saw that it was a huge feces blockage but not egg bound. We cleaned out the blockage - it all emptied easily and quickly after the bath - soaked again in fresh epsom salt bath, clipped away dirty (poopy) feathers with scissors from that area, sprayed the area with saline, blow dried her, gently pushed the prolapse back in with coconut oil and a gloved hand, and now she’s in a dark box inside with access to water + chick electrolytes and a mashed up Tums for calcium with some blueberries and mealworms so she hopefully eats it.

Seems like the prolapse did go back in and so far is staying in. She seems fine, she doesn’t seem like she’s in pain, and she tolerated all the treatment extremely well. She was super chill the whole time.

Any advice? She’s one of our favorite chickens so we’re hoping this is treatable and recoverable, not able/willing to take on a vet bill at this time (just had another chicken emergency a few weeks ago that cost $300 …. still haven’t gotten the free necropsy results back yet and that chicken had to be put down, likely Mareks and probably unrelated????).

I’m wondering if this was due to giving too many fruit and veggie treats, it’s been hot so I’ve been giving them frozen fruits/veggies to keep the flock cool and hydrated.

Anyway, after lots of internet research, I feel hopeful but would love to hear some success stories and further advice. Thanks!