HELP!!!

Please help!I really don’t know what to do anymore. My daughter just turned three 3 days ago and we have been having a nighttime battle with her every night for idk how long. She is potty trained day and night but every night no matter what she will spend nearly one entire hour on the toilet. She will pee almost immediately when she sits and then refuses to get up off the potty. If I take her off by force she screams bloody murder non stop until I put her back rinse and repeat for an hour every. Single. Night. I feel like we have tried everything, timers, bribes, talking, yelling, letting her cry, calling her bluff etc. The bathroom is dark with just a nightlight and we won’t sit in there with her anymore bc we thought it was an attention thing.I don’t understand. We’ve tried pushing the bedtime back later and earlier. Nothing matters. She has literally gone to bed at 10 pm after crying for 1.5 hours. I fully believe she is holding in her poop and then only going once she has “decided” she is done. I’m genuinely concerned she is going to either give herself hemorrhoids or something sitting in there.I really don’t know what to do and I’m so tired of losing my shit every night! I don’t get it. via /r/Parenting https://ift.tt/2Vx67iq