we have a heifer that had one foot out at 6:00 this morning.. it is now 11 and she still has had nothing... you can see two feet.. vet came out to assist but this heifer will not go to barn and we can't get a halter on her she runs and is nuts! don't really know what to do at this point?? any suggestions? she must be scared cause she usually is very tame.. we have shown her. how long before we are in trouble of losing a baby?