Should i call her or.......?

I told this girl i always wanted to ask her out, she said i would have to get to know you better. we were texing on tuesday and made plans for sunday (tomorrow) however im afraid she will forget, so should i tex her rite now and say "ready for tomorrow" or should i just wait for tomorrow and hope she comes.....i don't want to bug her that's the reason im not sure if i should tex her or not, i would call her tomorrow but were going to meet @ 9:00am