I know how you feel. Max is very hyper as well and requires a lot of exercise right now. I have noticed that he gets tuckered out when I add an activity that is not on the normal schedule (e.g. trip to the pet store, pet park, bath, etc.).
If it is feasible to get another pet then that may help; however, if you are feeling frustrated by one, you may be in for double the trouble!! LOL!!!
I have big dogs and we have "play time" in our office. I get to play on yorkie talk and Max gets out some energy.
You are a dedicated and good mommy for going the extra mile for your furbaby. Give it some time and I'm sure she will chill out. Do you give her Bully Sticks?