Ohhh I so disagree about that being all you can do! There is SO much you can teach this blank little slate!!
Babies are wonderful because there's nothing to unteach, just teach
Once she knows the basic ground work skills:
-yields hind end (with physical hand pressure and with swinging rope pressure, surprisingly pressure from your hand takes more work than moving away from motion)
-backs up (off physical pressure and verbal cue!)
-leads quietly and politely at an appropriate distance at walk and trot
-gives to lateral pressure (turning head with the halter)
-puts head down on cue (great for shifting out of 'flight mode' when they get older)
-Pick head up - out of grass :P
-be tied politely
-stand without being tied
-pick up all 4 feet
Once the basics are down you can teach SO much more!
-touch targets (learn as many different verbal cues for different objects as possible
-grab targets (picking them up or even fetching them!)
-follow targets (eventually at liberty through or over obstacles)
-stand quietly while you walk around
-pick up feet on verbal or visual cue rather than a physical one
-yield all parts with verbal or visual cue as opposed to physical ones (A point and a word rather than a touch or a swinging rope)
-back up numerous steps on a verbal cue (build it up! My pony will back all the way down my driveway)
-get her verbal cues perfect for walk/trot/halt transitions on lead to eventually prepare for easier mounted work
Oh there's so much more I just can't even begin to list it all I didn't even mention things to practice desensitizing! There is so much to do with untrained horses!! They're wonderful
Have fun! Let the baby have fun - make training a playful game as opposed to a stressful training session - remember we have horses cause they're fun!