Hi there and welcome to BW,
would you like to give some more detail? What age is she? And what does your day usually look like? Perhaps you could give us an outline, tell us when she wakes up, and when she goes to sleep. Just an average-ish day.
TBH, 1hr15 can be a fine length of nap depending on the child. It is around 2 sleep cycles (roughly 40 mins each), so if she's doing that and waking happy, I wouldn't be too concerned.