chick emergency! Prolapsed vent

[Mangotree44]

HELP!!
Unfortunately I stepped on my 3 week old chick yesterday...
I didn’t put my full foot down fully until I realized she was under my foot. I did enough damage that her vent prolapsed..
I did some reading about what I should do so I popped it back in with Vaseline after disinfecting it but now it seems that she can’t poop properly ... the next day she seemed disinterested in food/water and is becoming weaker...
whenever I gently clean the vent she starts bubbling at the beak. Any idea What this means? ☹
I feel terrible about it so if anyone has any helpful advice I would really appreciate it.

 

[I have 3 chickens]

I’m not sure what the bubbling means but, i would suggest you give them about a teaspoon of plain yogurt, and a 5 minute bum bath In warm water with Epsom salt. The yogurt should act as a laxative and probiotic, the warm water with epsom salt will help put everything into its proper place.
this happened to one of my chickens but she is full Grown, so this is just a suggestion but I don’t see why it wouldn't work.

hope your chick gets better!!