Unfortunately it is. Fibromyalgia does appear to run in some families. The only possible consolation I can think of is that your daughter may be coming down with this disease at a time that is a lot of research interest. While physician support can be pretty poor fibromyalgia appears to have gotten over the hump with the research community a couple of years ago.

Just in the last year or so three drugs, I believe, were approved for the condition. One of those drugs, Lyrica, turned out to be a runaway hit for the pharmaceutical company that produced it. The pharmaceutical industry is well aware that there are lot of patients out there that need help. This can only be encouraging for your daughter's long-term health. She's entering into a medical world that is vastly different from the one you unfortunately  grew up in. 

Keep engaged with Health Central to be up to date on all the latest findings regarding FM http://www.healthcentral.com/chronic-pain/fibromyalgia.html

Find a good doctor and see if he\she can find something to help her. Getting a good nights sleep is of course essential. It sounds like she might have Restless Leg Syndrome  which is not uncommon in FM. That could be something to focus on.

Meanwhile consider joining national support organizations such as the National Fibromyalgia Association so that they can lobby effectively for yours and your daughters health.

Good luck!