Dissapointed that Tia Zorina (the old gypsy lady) didn't die

I fully agree. What was her motivation in releasing Gwangi, anyway? Was it to prove herself right that bad things would happen? If so, it's all on her. I did see her get knocked down in a narrow exit corridor by the mobs fleeing the arena. I think we're supposed to assume that she got trampled to death. Back then big studio movies aimed at a young summer audience didn't show things like that in detail as they would now. It was shown too briefly though. You'd miss it if you blinked.

I believe she was trampled to death when the crowd rushed out of the stadium.

I didn't particularly care for her, but let's get the facts straight. SPOILER ALERTS

1. She didn't "have her men steal the Eohippus." Miguel stole it on his own. Her other son picks up the bag with the Eohippus inside and she states, "No! Leave it. He who takes from Gwangi the evil one is cursed." The man defies her and takes it anyway, saying, "Only by an old woman's tongue." The old woman persists, saying, "If he (the Eohippus) does not go back to the Forbidden Valley, we shall all suffer a terrible fate." He mouths off, "Keep your superstitions to yourself, old woman!" and walks away with the bag. She says, "Fool! One day he will learn to obey the law of Gwangi. Or, like his brother, he will perish!" 2. "which leads Tuck and the others to the valley" Nope--The archaeologist was led to the valley from wanting to do scientific research and Tuck was led there -- the first time, at least -- motivated by greed and the thought of selling the horse to a rival circus. 3. "Where they encounter Gwangi and get attacked" yeah because of the aforementioned reasons, and their stupid decision to go after the Eohippus which had rightly been set freed by the gypsies. 4. "Which results in Gwangi taken captive" --again, humans' fault. They should have first attempted to get Gwangi back to his valley (fault of humans that he left the valley in the first place) -- and if not, killing him would have been better than the fate they had planned for him, taking him back to town so they could profit on him in a circus; 5. the dwarf releasing Gwangi was the two gypsies' attempt to set things right, since the other humans had failed to do so. She had no reason to think the greedy circus folk would ever let him go (and she was right; they wouldn't have and there was no reasoning with them).

Another post below; (ran out of room).

She was the moral voice in the movie, albeit an annoying one. The circus folk and cowboys were meddling with nature on a scale never intended. The gypsies wanted to leave nature alone. The cowboys and circus folk couldn't resist, and we saw what happened as a result. The primary cause and human motivations were similar King Kong: human greed, lack of empathy toward animals or wildlife, Man's belief that nature should bend to his will. I do not blame the old gypsy woman.

Still, if she had gotten trampled on, I would have cried ... (wait for it... pun alert!) crocodile tears.