Pride of Arms by Andrea K. Stein

12 Days of Christmas, 4 well-intentioned matchmakers, & a chorus of ghostly cats
Widowed headmistress Grace Phippen seeks a mature husband for her niece Lucy to tone down the young woman’s obsession with volatile science experiments.

Lucy can’t stop concocting dangerous chemistry in her tiny closet laboratory, but she’ll do whatever it takes to help her aunt keep their London young ladies’ academy afloat.
Cupid’s arrow may run afoul of an excess of mistletoe, but true love strikes wherever it may…