Your niece asking to learn diving is actually a huge deal for a U10 goalie. That skill is scary for kids because it means throwing their body on the ground and trusting they won't get hurt. Most coaches wait until U12 to even bring it up. The fact that she asked you means she trusts you more than she trusts the ground. A $4k bonus gets spent and forgotten by February, but a kid who learns to dive at 9 or 10 carries that into every season after. You also gave her the one thing money can't buy, which is a grownup who showed up when it counted. That Tuesday slot is doing more for her than you probably realize.