It's b/c you love her SO MUCH! I'm a bit of a worrier as well... For a while, I couldn't even stand the thought of leaving them alone to go to the store which would only be 30 min or so...
I know it'll be hard but you'll have to "convince" yourself that everything's going to be okay. That you're taking all precautions possible. One of the reason I visit this site is b/c it keeps me informed. And there are so many great members that's always here for moral support!
Just take it one day at a time. Keep telling yourself that your Oli is safe and happy.
Another way to look at is that it's better you enjoy your time with her giving her happy memories instead of wasting that precious time worrying away.