The losses of Rhaegal and Missandei in Episode 4 could push her over the edge, and she’s showing increasing willingness to roast any and all within King’s Landing if it means taking the city and the Iron Throne.
It was a heartbreaking scene that will undoubtedly impact both Dany and Grey Worm in some dangerous ways.
Dany has lost her two closest and most trusted advisors, and Jon won’t return her love the way she wants.
Learning that Tyrion knew of Cersei’s pregnancy without mentioning it won’t get him back in her good graces.