She's just old enough for mother's day out. And it is SO worth the money. We weren't sure we could financially do it at the time, but it was so worth every belt notch.
I'm not sure what's available in San Antonio, but when my kids were that age and I was a stay at home mom (now I'm a work at home mom), I took the advice of other (older) stay at home mothers I highly respected - great mothers and great kids. And they all assured and encouraged me that just because I chose to stay at home and even homeschooled a while, etc., that I needed breaks from my child too and it wasn't evil or even selfish to recognize that need. I also wanted each child to get some undivided attention from their daddy and me as well. MDO programs offer a small window of time away from home, usually 3-5 hours, and an opportunity for little ones to make new friends. And many MDO programs offer some preschool type academic preparation. Capital Gymnastics offered a variety of educational and enrichment activities, including gymnastics. It also brought me in contact with other Moms with kids the same age as mine and opportunities to develop friendships for support that way. You don't become close friends with every other mommy you meet, but I made two very important friendships there that later really helped during two deployments and again later after I was in a massive car accident and had to rely on help from others while I dragged myself to doctors several times a week. You feel the stress now, but let me tell you - you never know what's around the corner. Sometimes we're so busy being moms we forget we need to build new friendships and a support system as well. (Quite easy - I totally love my kids and am easily swallowed.) We may not always think about it in the moment, but in a crisis, it's crucial to kids and parents. And sometimes it's crucial to plan play dates so mommy can get a break.
Other gymnastics places up here have MDO programs too. And many churches as well. Ask around and call the gym places you can find in your area. Personally, I really liked the gymastics because it reduced the amount of injuries around the house - no kidding! (My kids are still adventuerous at 11 and 9!) And it gave my little ones a foundation in fitness as well.