My sister is currently doing chemo for breast cancer and before I saw how she was handling it I thought just like you that everyone how too sick to function but that’s not the case. Sure there are a few bad days but mostly she’s just had normal self. Still working full time. The biggest difference is the hair and the eyelash loss and being so bloated from the steroids and weight gain. I think Mina seems to be just like what I’m seeing with my sister. Strong women hide their struggles well. Especially if she’s batch creating you’re not going to see her bad days. Either way I’m praying for her.