If that's an auto, alot of things could have slowed her down, only you know that, stuff like transplanting, stress, over-underwatering,.
But at 7weeks, most of them I've grown, had nice size buds that were developing, a couple were even ready at 65days, .
Also had some go over 90days too, but that was my fault.
What kind of autoflower is she? And from what seedbank?
They some slow ones out there , but your plant looks nice and healthy, and will finish ,nicely.
GoodLuck, hang in there.!!