My little girl does this & she’s having nightmares xx
My 3yo does this, has been for about 2 months now, I imagine he's having nightmares, just needs some cuddles and loves to go back to sleep ... Tho he has primarily started sleeping with my husband when it happens x
https://www.whattoexpect.com/toddler/sleep/night-terrors
If it’s the same time every night then it could be night terrors, try waking her up 10 mins before she usually wakes up and she should “grow out of it” in about a week. Or she’s overtired, try putting her to sleep an hour earlier or giving her a nap in the day/dropping the nap so she’ll go to sleep earlier