If you was a single person with no responsabilitys I wouldnt be saying this.
However you are not, you are a parent of a young child. It is your responsability to take your meds, if you forget you cant allow yourself to be distressed in front of your child.
She shouldnt be a side effect of you not taking meds.
I am sorry if this comes across as harsh but I have been in your situation with my elder two lads and as far as I am concerned I failed as a parent. I have four little ones now and I will do my best to give them the childhood they deserve.
I know its not easy to walk away when you are about to lose it but its the only choice you have if you want to succede as a parent.