To be honest, I'm not liking the female lead. I get she doesn't want to be involved with him...
but I mean, is it so bad to receive support? If she keeps going the way she is right now,
her father will eventually pass away...And all because of her being too stubborn.

This time she was able to save her Dad, but will she be so lucky next time?
I'm someone who has taken care of my ill Dad for a long time. I know how desperate a person can be in that situation... But all she's thinking about is her own survival. When I was taking care of my father, I barely had any time to think about myself. It's like she doesn't care about her Father at all.
Also, the locks...that's just so wrong. I can point out so many reasons why that's just wrong. Leaving a mentally unstable person home alone with locks on the door...She even ignored the cracks on the door. Before going back to work, she first needs to find someone capable and willing to look after her father.
There's just too much I'm not liking about this manga, but for the beautiful art's sake, I'll continue reading until the current chapter to see if it gets better.