While on the topic of the accuracy of translations, if anyone has a Japanese transcription of just the top half of page 4 (the 3 panels with haibara talking about her parents death and the drug), I would like to see it. The things said in these panels have significant implications:
1) Whether the Miyanos has more than one project they working on. "An early prototype of a drug made by my parents" = implies multiple projects pretty clearly vs. "an early prototype of the drug made by my parents" = APTX definitely existed back then, one or multiple projects still ambiguous.
2) The other drug from Haibara's thoughts.
3) The identity of the "they", Miyanos or BO, who wanted Haibara to work on that other drug. They lead to very different theoretical outcomes because the two have different motivations, especially if we find out Elena is linked to MI6 via her sister. Also might resolve why the Miyanos left their daughters at the mercy of the Black Organization (They planned a mission for Shiho?)