It is possible she needs more A than 2hrs? How long has she been staying uo for 2hrs in the am?
Setting naps is entirely up to you. Some people go strictly by A time, some use a sleep window (so pd for nap sometime around a certain time, give or take 15-30min depending on how sleepy LO is), some set naps at a reasonable A time after a 7am wakeup and push through to that time even if LO wakes early.