Welcome to In-Depth Outdoors chopper6322!!!
Does she like to retrieve? If so find a buddy who has a dog that loves to do water retrieves from a boat. Take both dogs out in your boat and let your buddy’s dogs do a water retrieve in front of your dog with your dogs retrieving dummy. Hold on to your dog tight as she is going to want to get at her dummy in the worst way as that is her dummy and not your buddies dogs dummy. This will let her see how it is done, now do a second retrieve but this time let your dog do the retrieving, she should be ready to go. When I fist got my dog she was leery about going in the water but when she saw my friends dog go after her dummy in the water she about tore my arm off trying to get at it. After that I never had a problem with her going into water in fact now she loves the water.