Did you try typing "help", which gives you the following rather verbose block of text:
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This is an exercise in NPC interactivity. There's no puzzle and no set solution, but a number of options with a number of different outcomes.
HINTS: Ask or tell her about things that you can see, that she mentions, or that you think of yourself. Interact with her physically. Pause to see if she does anything herself. Repeat actions. The order in which you do things is critical: the character's mood and the prior state of the conversation will determine how she reacts.
VERBS: Many standard verbs have been disabled. All the sensory ones (LOOK, LISTEN, SMELL, TOUCH, TASTE) remain, as do the NPC interaction verbs ASK, TELL, HELLO, GOODBYE, and SORRY; KISS, HUG, and ATTACK. You may also find useful THINK and its companion THINK ABOUT, which will remind you of the state of conversation on a given topic. The verb RECAP gives a summary list of topics that you've discussed so far; if she's told you that she's said all she knows on that topic, it appears in italics.
SHORTCUT: 'Ask her about' and 'tell her about' may be abbreviated to A and T. So >A CHEESE is the same as >ASK GALATEA ABOUT CHEESE.
There is an assortment of walkthroughs available at http://emshort.home.mindspring.com/cheats.htm, but I suggest not looking at them until you have already experimented somewhat.
