Our DD is 2 years 10 months. We potty trained her in August last summer, and things went fine. She got the idea very quickly, and then it was just a matter of reminding her. We've had virtually no issues with poo from the beginning (she's literally only soiled herself a few times), only wee.
I wouldn't say she was 100% reliably potty trained but things were consistent (i.e. she'd maybe have an accident if she was overtired, or when waking from a nap if we didn't get her to a loo/potty quickly, and we'd have a few leaks now and then). She's also really independent so will take herself off to the loo, shut the door, wipe, wash hands etc.
Cue the arrival of her brother four months ago. Now we're dealing with odd clusters of accidents and leaks. She'll be fine for a while and then boom, leaks galore. She's even squatted down to just wee on the floor recently. It all seems to have gone to pot, and though it's probably due to her new sibling, I'm not sure how to get things back on track. It's worrying me a bit that she doesn't seem terribly bothered by it, either.
Any ideas?! DS is reflux-y and the washing with the pair of them is killing me!