Nidoto Ie ni wa Kaerimasen!

Despite being the eldest daughter of a Baron, Chelsea has spent her life enduring endless torment at the hands of her mother and younger twin sister Margaret. But that all changed on her twelfth birthday, when she is discovered to have the never-before-seen skill — [Seed Creation]! Brought to the Royal Research Institute by her appraiser, Glen, for further study of her ability, she is greeted with open arms, a big room with personal maids, a soft warm bed, and all the delicious food she could want. Her life couldn't have done more of a complete 180! But of course, Margaret won’t sit by quietly as Chelsea is now pampered like a princess... (Source: J-Novel Club)