Revolving around three generations of women — played by Anna Calder-Marshall, Juliette Binoche and Florence Hunt — within one troubled family, Berlinale competitor Queen at Sea offers a scathingly unsentimental look at the complexity of caring for an elderly person with dementia. Shot in London, this scrupulously realist work by multi-hyphenate Lance Hammer (his first directorial effort since 2008’s Ballast) reportedly evolved out of intensive rehearsals and input from social services and policing experts who, in some cases, play fictionalized versions of themselves. That commitment to both technical and emotional veracity pays dividends all round, creating a work that’s not exactly fun to watch but one that feels sincere, urgent and unflinchingly honest. Queen at Sea The Bottom Line Sometimes love is not enough. Venue: Berlin Film Festival (Competition)Cast: Juliette Binoche, Tom Courtenay, Anna Calder-Marshall, Florence HuntDirector/screenwriter: Lance Hammer 1 hour 56 minutes Although Hammer is an American, he’s either picked up or been well-advised by cast and crew about the nuances of British life in the capital because so many of the details here …