(She's 18 mths, fell about 3/4 ft, couldn't see her actual landing. No unconsciousness, cried hard for about a minute, and then cried until I let her climb back on it She landed on that bouncy car-tyre stuff)
a) keep an eye on her overnight/check she's OK in the morning
b) wake her every two hours through the night (as per NHS online advice) & see if she seems unnaturally sleepy or confused....
c) take her to A&E now just in case
She seems fine - bit grumpy, but then she had a short nap. Not a mark on her