Children's - Early Chapter Reader Girl was born on the same day and same time as her grandmother and inherits powers

[Mathew]

The main character was born on a particular Saturday, possibly at midday/noon. This specific birthday is given as the reason for.her powers/abilities. I read it in the early 2000s (before 2004) and I want to say it was part of a series, but it may have been a stand alone.

[Kris]

Mathew, can you describe the girl's powers and how she uses them? (Spoilers are fine - just give us a clear warning before revealing a spoiler.)

What is the story's time period and location (fantasy world or country/region/city/small town)?