We have been at this for about 1.5 weeks and I'm ready to say uncle. She can pee and poop on the potty IF I catch her at the right time and make her sit. We even had 2 days straight of NO accidents, including several trips out and about for 2+ hours. And then today between wake-up and lunch time, she peed on the potty (once, when she woke up and I told her it was time to go to the potty), then pooped in her panties, then peed twice in her panties, the second time only like 10 minutes after the first time. And when she does this, she just keeps on playing. She doesn't come get me, she doesn't complain, she doesn't tell me she needs new pants, she just keeps playing.
I really hate for the progress we've made this past 1.5 weeks to go to waste, but I feel like it's not going anywhere. She's stubborn as a mule with EVERYTHING. But the fact that she doesn't seem to get upset when she poops or pees in her panties is concerning me. I'm also worried because we are going to Disney at the end of September and if it's still like THIS when we go, it will be a disaster. She will be 3 in November. Opinions?

Re: XP: Potty training. At what point do I give up and try again in a few months?
If you do back off, you could try keeping potty time as part of pre-nap and bedtime routine, to help her more slowly develop the habit of using the potty.
I would keep the potty out and maybe ask your LO would like to use it before bed or whatever, but not push it. Give everyone a break and a chance to mentally regroup.
I have noticed progress after the past week and a half, whereas she was peeing in small squirts as she sat on the potty, and now she's peeing in a steady stream. I really think it's a behavior issue, not a physical one. My older daughter was so much easier to train, but my little one has taken longer with everything - crawled later, walked much later, when we took away the paci my older daughter cried for 5-6 days, it took my little one over a month :-( She gives me a hard time going to sleep, lays in bed awake for an hour or sometimes more, and then in the morning doesn't want to get out of bed. She's just more stubborn all around. My husband doesn't think we should throw in the towel. DD flip-flops between telling me she wants to wear diapers, and telling me she doesn't and doesn't even want to wear pull-ups/diapers for sleep (which is the only time I've been taking her out of panties). I feel like if it had been 3 days or so, it might be better to give up and try again, but since it's been over a week I feel like she really understands but just is resisting.
She even peed in the bathroom at Target the other day! All her accidents are happening at home. I think she doesn't want to stop playing. My only concern is that she doesn't cry or get upset and come tell me when she wets herself.
We also watch the Daniel Tiger about going potty. It covers stopping playing and going to the potty so that you don't have an accident. It's great; "If you have to go potty, stop and go right away. Flush and wash and be on your way!"
Instead of "training" my son, we waited for him to be ready. He decided he wanted to poop in the potty on his own. He started waking us up at night because he had to pee. He decided he wanted to wear underwear and pee in the potty. He was never naked. I didn't follow any books. I never gave him any treats for going. We don't have to have a potty anywhere near him, he goes to the bathroom himself or gets one of us every time he has to go. He has had one accident. When they're "ready" no matter what age, it's really easy. They train themselves.
I would let her decide what she wants to do. You says she's stubborn, so let her feel like she has control. If she wants to wear diapers, let her wear diapers. If she wants to wear underwear, remind her that means she needs to use the potty. When it becomes something she wants, her stubborness will work to your advantage.