My almost 3-year-old is suddenly terrified of pools. The weird thing is that her fear is VERY inconsistent. Last week we took her to the pool and she did great. She got in the baby pool without being prompted, and played and splashed. Then we took her again yesterday to the same exact baby pool, and she freaked out. She wouldn't even sit on the edge and put her feet in (which she's always done in the past, even when she was scared to actually go in), and she clung to me and screamed in terror. I'm not sure what's going on there.

What should I be doing to help her get through this fear?