If you were the last to arrive (with seating limitations), that is probably why you were left out. It that's the case, it likely was not personal. From your description, this woman has very poor social skills at best and at worst she's callously insensitive.
I would prefer my own taxi anyway (people can make you late etc.). Don't let this 'one thing' sour your holiday. You can still make the best of it and have a great time. If this is someone you know casually, give her a chance to redeem herself. If she continues to live up to her rudeness, you'll be glad for that taxi (upon your return), secure in the knowledge that going forward, you can choose other cohesive friends to go on break with.