Neko Lover's feed

What did the mistress thought was going to happen when he got married I could of understand she was a concubine but she only has her family Noble name he didn't gift her anything but dress's and gifts no Noble name either and let her stay in the empress place for a bit if she had a baby or kid but nothing and was trying to fight with the empress lol ╮( ̄▽ ̄)╭