You'll need to know how many weeks pregnant she is. If it's not known, a stat ultrasound is in order as soon as the pt. is stabilized. OB's often won't get involved unless the fetus is at least 20 weeks' gestation. They are not usually seen on the OB unit before then, either, since it's difficult to trace a fetus prior to 20 weeks.
As far as anesthesia goes, it's wise to avoid general when practical, although it may be necessary to dave the pt. As harsh as it may seem, the health of the mother comes before the fetus'.
If the pt is greater than 20 weeks, at the very least she'll need:
ED trauma staff (attendings, RNs, etc)
OR staff
Plastics (for the facial trauma)
Anesthesia
OB
And possibly:
Perinatology
L&D staff
NICU
Neuro (brain injury)
Ortho (head/neck injury)
There may be more that I'm just not thinking of, it's been a long day. But this should get you started