If mother is father, the reaction would be much different.
Gosh, this mother characters is much better than another father manhwas My god, fathers only interested once a child change buc of old soul inside baby's body or change entire plot aka reincarnation/reborn. WHILE, this mother went back in time, learn her dammit mistakes and regret, she still have her guilt, and doing it for her daughter have much better life than last timeline
The way I found out the spoiler. The plot is full of surprises. I wasn't not expecting the plot behind this is tragic and miserable
Spoiler pleaseeeee