Why text her at all? In most states, you have a legal right to attend any and all athletic and/or school events, irrespective of whether it's "your day" or not with the children.
Me: 46 W: 44 Married: 17 Together 21 D13; S10 BD: 03.03.15 (Not attracted to you) Almost 2 years trying, alone, to save marriage Status now: Divorced (effective 06.13.17)