Start looking for summer programs in your area (look on your town's website for recreation programs, the town library, the local pool, etc) and see if you can find any suitable summer classes/programs (lots are free). Local mommies must be doing something, somewhere! :)
Also, start looking now for a 2 year old pre shool program. My daughter is in one now and she loves it. It's very loving and nurturing and she is learning so much. Also, no need to spend a fortune on a 2 year old program. Any small program (perhpas in a local church) will be perfect.
And to answer your question, no, how could it be wrong to put her in day care for a few hours a week? Sounds beneficial for both of you.