help

was looking to reread but forgot.. can’t find either

So she is the fiance of someone and that someone (ML) has a prince brother. So ML went to war and Idk if it’s the same story but I think she embroidered a welcoming cape for him(?) he sent her a tree (it reminded him of her hair(?)) when he returned (dunno if this is the same story, it’s been so long since I last read it) but she got sick. He was jealous of his younger brother (prince) and ML thought her and prince kissed but it was actually the dog(?) (it sounds weird but it makes sense when I read that but I don’t remember shit rn please bear with me.)

Was it reincarnation(?) hmm Idk but she know the female lead or yhe future wife of the ML and they became friends and she urge that past life wife of ML to compete with the Duchess(?) title against her older cousin.

I probably could say more plot but that’ll be too long

I tried my best yesterday. I had the urge to read it. Please help.