I don't know the secret handshake of the official women's bicycle society for advancement of all things beautiful and strong... but here's my take

Shop where you need to shop to get the products you want / need. Put your comfort first. If your LBS is otherwise worthy of your support, tell them that you'd like to support them and buy products [X, Y, Zed] from them, but because of their lacking selection you're forced to go elsewhere. Let them see the dollars they are missing!