I would give her a few days and check your balances again, then contact her if they still haven't been used. I always feel it's best to be upfront & honest. Remind her this is your honeymoon and you have a lot to coordinate besides just planning this trip. You need to be able to count on her.
May I ask, why did you use a TA for a Disney trip? It's pretty simple to book on your own. Is she offering anything special in return?
I use a TA for Disney cruises. Not that I need her but mostly because she gives us onboard credits as a thank you for booking with her. Depending on the length of the cruise that's $100-200 per cabin. So for that much, I feel it's worth the headache to relinquish control.
If after a few days your gift cards are unused, I would call Disney and explain the situation. It may be difficult to have a reservation taken away from a TA but if you're being scammed financially, you might have a good case. Do you have some written record of when you sent her the gift cards?