Have you considered other methods of getting the milk into your daughter? Her caregivers, depending on the situation (daycare vs family), could use a spoon or cup. She's old enough to use a cup with assistance, or she could use a soft-spout sippy cup.
In order to ease her into the transition, you should've started the whole process about 4 weeks ago, but that's moot now :) Be patient with her, breastfeed her while you're with her, and trust that things will equalize.
Don't necessarily look at the clock either. Yes, 11 hours is a long time, but did she cry the whole 11 hours? Or did she seem comfortable for some of that time? Babies have a way of asserting themselves in various ways, but it's not that they are being manipulative, even though it may feel that way.
Take the weekend to take some time to yourself. Make sure you're nowhere in sight while someone else tries to feed her via bottle, cup, spoon,... whatever they choose. Knowing you're home could be hindering her from accepting the non-breast feeds.
Also, keep in mind that some women don't respond as well to a pump as they do to their baby, so don't get frustrated if you experience an initial dip in your supply. Once things settle down, the stress lessens, and the new routine starts feeling familiar, your supply should return. And be careful about birth control, as all methods excluding abstinence cause a dip in supply.
Good luck with the bottle, and try to enjoy the time you do breastfeed your daughter :)