What a shame, you never should have had to see her in this state so that it upset you so much. When females are spayed they are normally kept overnight at the Vet's clinic so that they can monitor them after the surgery. Usually by the next morning they are back to normal.

I know you will toss and turn tonight - but you just wait until the joy you will have tomorrow seeing her in her "normal" behavior mode.

Even so, I will say a prayer that all goes well and you will report just that tomorrow!