B.C.
It sounds like there's little or no room in her jaw for the tooth to emerge.
What an orthodontist does about this is to use an expander to make the jaws bigger - and then the tooth can emerge and line up with the others.
Back when I had braces - in the 70's - there were no expanders - and what they did was pull adult teeth that didn't fit and align the remaining teeth.
Besides wisdom teeth (4) - my bicuspids (another 4) were also pulled.
I was in braces 7 YEARS- 5th grade through 11th grade - and I so hated it and it was so painful!
For our son - he had the expanders - and he only had 3 years - 4th through 6th.
He didn't have to have any teeth pulled and they are beautiful and straight.
The expanders are wonderful things, using them is much less painful and I only wish they were around when I could have used them.