I don't think she's being pushy or trying to make a sale. LV generally does NOT order their stock like most businesses (or this is what my SA said). Whatever is sold is deducted from the inventory from the computer and it's up to the main head office to decide how much and when the new stock will be sent to this store. Thus the SAs generally don't know exactly when or how much of item X they'll receive for the next shipment. The only thing they can control is if you do a charge-send, transfer, or directly order item X from France if it's completely sold out in your country (excluding LEs).
I personally don't care if the item is on display or not. Sometimes if there is a choice, I will purposely choose the one on display for my reasons. However, if you wanna wait, then it's up to you.