Night terrors can occur at any age,but I would still keep an eye on her for the next bit. If she did cut three teeth it's possible that she got a really bad jab of pain and wasn't quite awake yet when the screaming started. I would mention it to her pediatrician next time you see him/her for an opinion.
She's been doing well since then. sleeping really well at night as usual.
but she does have a check up coming up at the beginning of January so I will be sure to ask this Dr... it's not her regular pediatrician because she is on maternity leave lol but she has seen this guy before and he's great so I will ask him.