Similar to Joey King's The Princess?
Isn't this a very similar premise to the 2022 Joey King movie called The Princess?
"When a strong-willed princess refuses to marry a sociopath, she is kidnapped and locked in a tower of her father's castle. With her vengeful suitor determined to take the throne, the princess must save the kingdom."
https://www.imdb.com/title/tt13406136/?ref_=nv_sr_srsg_8_tt_7_nm_0_q_the%2520princess