Spoiler in the epi 14 thread (iirc) demolished any sense of shockness of Daru being Suzuha's Dad.. though tbh it still won't be much of a shock considering how much hints were dropping around.
I was really, really happy for Suzuha who had finally found her dad and the next moment, the mood changes as it was revealed she broke down mentally (that letter..) and suicided... way to go Steins;Gate
After the D-mail, there wasn't any mention of her going mental but instead she passed away due to an illness. I'm guessing this means she either found the IBN5100 or she didn't regain her memory as to whom she really was but that "Helping someone else" line suggests otherwise. Ahhhh questions, questions !!
