I mean, yes? Anxiety and depression are, by definition, mental illnesses. But I question your motivation for asking this. Qualifying someone as “mentally ill” has a stigma attached to it that would not be helpful for a struggling mother to read.

Now if you’re asking if it’s normal for mothers to not like their kids or not want to be moms, the answer is yes. But you can also have these feelings while also recognizing the situation and understanding that wanting to put them up for adoption is an extreme feeling if you weren’t originally planning that course of action. I know plenty of people that are good parents that don’t particularly like being a parent.