Oh Rachel, I feeeeeel your pain. My oldest is 12, and has been in sports since he was in kindergarten. I have two more, who have also been in sports/activities. There are times in the year when we are gone EVERY SINGLE NIGHT of the week. Then, there are games, etc on the weekends.
I admit to wishing my kids would decide to not go out for something, so we could have a break. That won't EVER happen with my oldest. Since, my 10yr old has decided he's not really a sports person, he'd doing guitar every other week. That's better, but we are still all over the place for the others. You don't want them to miss out, but geezie petes, it gets crazy.
Couple of things- Keep a "play tote" in the car for your other kids. It's more fun for them to have something to do when you have to sit and watch practice. Also, have snacks all ready in your tote (you will have to change them out once the weather gets hot- I learned that the hard way...ew). Yes, you still go home and make dinner, but kids are hungry when they get home and need a little something. I agree completely with the crockpot. Especially during football season, that's almost ALL I cook with! www.allrecipes.com has great crock recipes.
Initiate a conversation with the other parents. They won't offer to help, if they don't know you need it. I have been a SAHM for 12+years. I was MORE than happy to grab kids and get them to and from practices and games if I knew parents needed the help. Now, I will be working part-time and I'm going to have to cash in some of my cards, to get some help with activities myself. Ugh. Also, as your child gets older, you will find that you will become more comfortable with dropping her off at an activity and being able to go home inbetween- maybe not for awhile, but eventually. We do that with my oldest and as long as we get to most games, he's out there to play and doesn't care if we're there for all the practices. This is where it will come in handy to get to know the other parents, too. There are several families that we are all each other's "emergency contacts". If anyone isn't there, we all have each others back - or their kid's backs:)
More on the other parents......because neither my hubby or I grew up here, and moved once our kids were in school- we had to make friends as adults. Our closest friends are our kids' friend's parents. This is our social life. Football games, summer baseball and even cub scouts became the catylist for my hubby to become good friends with another dad. You really bond when you are sitting at a baseball tournament, in 33 degree weather, watching your son's team play in SLEET, while huddled in blankets with only your eyes peeking out. On Mother's Day. Funny today, but not so much, then! LOL!
Do not feel guilty. We have to do so much coordinating and running around as parents. It IS stressful. Especially when you have little ones. We had a surprise once my youngest was 7. This little girl has spent so much time in our vehicle because we are always driving around to these things. She has suffered no ill-effects. But, it is harder with her to contend with. This is why during this baseball season, I drive my oldest to the coach's house. He takes him to practice and I go pick him up afterwards at coach's. This way, coach doesn't have to go out of his way to bring him home (not that he wouldn't-m he offered, it's just my own guilt). I don't have to drag my toddler to each and every practice. I realize at age 7, your daughter would probably want you to be there. Even when you ARE there, you can't see everything. You are dealing with a 5 yr old and a toddler, too!
I may feel a little wary of having a young person drive my kid, but I would definitely be ok with asking her/him to sit at the house with my 5 yr old and 18 month old, while I could go watch the practice/game! That might take a little of the stress off!
Try to make it an "outing". Bring a trike/bike if the terrain allows. Paper, pencils, coloring books...more fun for all of you.
*Once, when I had my three little kids (had 3 in 3 years) in a shopping cart at Target. A woman came up to me and told me that I thought it was hard NOW, just wait until they get older. I refrained from choking the woman, because I thought she couldn't have been more wrong. It was very hard. I couldn't imagine it any harder. But, it does get harder - in different ways. You aren't dealing with the baby stuff so much, but it's the running around that will become the new challenge. I cannot stress enough asking for help from the other parents. Or, accept the nightly grind and try to find ways of making it not such a burden, but a fun event.
Good luck to you!!! :)