I think, It's important what kind of emotion Valda wish put into her "message", because the phrase "Хватит меня опекать" or "Прекрати говорить со мной снисходительно" means that speaker just wants to have equal status. This phrase is neutral.
However the phrase "Перестань умничать" (short variant of "перестань строить из себя умного") contains insult and could start quarrel.