Did you sign a Buyers Broker Agreement with this agent? If you didn't, then you are free to use another agent. If you did, you are still free to use another agent but if you buy a house they showed you, then they may be entitled to a commission. You should definitely disclose this to any agent you choose to use. In addition, If you choose to use another agent, I would recommend that you put in writing your desire to move on and use another agent to your current agent. Make it clear that you were unhappy with her services and do not wish to use her. This will help the next agent you use to not violate any Buyer's Broker Agreement you may have in place. It's unfortunate that you are having this experience. It's agents like this that give the industry a bad reputation. Good luck & happy house hunting!