Day of Coordinator

I've decided it's best to hire a day-of coordinator for my wedding. A dear friend who I trust implicitly offered, but I would really rather let her enjoy herself as a guest. I narrowed down to a couple that sounded like a good fit and both sent proposals. I decided to move forward to request a contract from one - she was not only best price but covered more in the scope of what she was offering. The thing is I have had to follow up with her umpteen times to get a response every time - first for her estimate, then for the contract. Now I've been waiting three days for her to respond to a simple question I have before signing the contract. Am I an a-hole if I decide to move on? This feels like a major red flag.