Acquainted with another Mom

I wrote a post last week about another mom of 3 that I met on a fair. I also am a mom of 3.

She initiated to exchange numbers and contact. However, last time she took a week to respond to me and now almost another week that hasn’t responded to confirm the time when we meet up this upcoming week. I find this quiet rude and inconsiderate, because I also want to plan accordingly, other play dates, birthday events, excursions etc.

Feels like I’m going out on a date with a guy who seems not that much interested. Would it be wrong of me to just cancel our date? Or should I mention that she’s taking forever to respond to my messages?