Hello again to the frequent helpers on this board!

(Also, is this the right place for this stuff? Please let me know if I should be posting on another board.)
I've found a photographer whose style I am enamored with. After my initial email, which she didn't respond to, and a voicemail she didn't seem to listen to, I messaged her on FB and got an immediate reply. She was then able to email over her brochure. This took about a month total.
After a short back and forth a week and a half later, I still hadn't gotten resolution on the last email. I called her today and finally discussed details. The whole saga has lasted almost two months.
Long story short, she seemed like she could take or leave my business, though she has my date open. She has excellent reviews on The Knot and has a lot of exposure in blogs and magazines in our metro area—all in all, she seems totally legitimate. I'd love to chalk it up to her being busy, but I still feel as if I were almost annoying her.
I know I should probably go with my gut and decline to sign with her, though her work is exactly what I want. I haven't found anyone in my budget and I'm apparently exceptionally picky. Has anyone had a rocky beginning with a vendor but had it all work out in the end? Do our personalities need to mesh super well for me to get the type of photos I want from her (and know she's capable of taking)? Any other advice?