6 months and still can’t handle this

I've had my labradoodle pup for just under 4 months now, she just turned 6 months on Monday.

It seems like it's always 1 step forward 2 steps back. My daughter lives half the time with me and the puppy causes so much stress in the house that she doesn't even want to be here. We just can't get any sort of traction going.

The dog had zero accidents in the house after the first week home until a couple of weeks ago, and has now peed twice in the house (not long after a proper outside bathroom break) since then. At the same time I'm sitting here with her in her crate all morning because she's refusing to go to the bathroom outside after now almost 5 hours since her last pee.

I haven't been able to sleep past 6 am since she's been home. I've cut down on enforced naps, started keeping her up hours later in the evening, and I'm still getting woken up at 5-530AM every day.

There is no joy in this house, it's all stress and I just don't know what to do anymore. If I give her up I feel like I've failed my daughter, and if I keep her I feel we'll always be miserable here.