If ML is actually around 35/40 and worst if 50, that's still not even close to ok. The story time period is nowhere near Middle-Age. Like... absolutely not regarding the aesthetic. At best 17th century and I am being nice. It is more like a patchwork around late 18th and early 20th. Huge age gap like this weren't well regarded AT ALL. It happened sometimes between nobles with heritage in mind, but it was heavily stigmatized. Young ladies were most likely to marry around 25 yo in the major part of Western Europeans countries like GB or France....
If ML is actually around 35/40 and worst if 50, that's still not even close to ok. The story time period is nowhere near Middle-Age. Like... absolutely not regarding the aesthetic. At best 17th century and I am being nice. It is more like a patchwork around late 18th and early 20th. Huge age gap like this weren't well regarded AT ALL. It happened sometimes between nobles with heritage in mind, but it was heavily stigmatized. Young ladies were most likely to marry around 25 yo in the major part of Western Europeans countries like GB or France....