Musical Project: Best Supporting Actress 2012: Jacki Weaver - Silver Linings Playbook

The mother roles have always been very likable to the best supporting actress Oscar category, so it shouldn't be such a surprise when Jacki Weaver was announced to be nominated for this role. But I almost swallowed my spoon, while watching the announcement.
The reason for that was very simple. She really doesn't have a lot to do in Silver Linings Playbook. Her nomination is probably the logging of Harvey Weinstein, but let's look at her performance a bit deeply. Is it really as deficient, as many people say?
I gave a question that is really difficult to answer. The first time we see Weaver's character is in a medical institution when she comes to let his son off and she handles this scene really very well. The scene in the car in which she takes him home are almost perfect.
But the truth is that later in the film she mostly just stands in the corner and says one or two lines, at the most. But she delivers them very well.
I believe in one thing: I (or the Oscar-performances bloggers in general) should care about the quality of the performance, not the quantity of the scenes. Of course, I also have to take the length of it into the consideration, but it's not the main thing I should care about. Therefore I don't hate, or dislike Weaver's performance. Her pity is that she really doesn't have much screen-time, but her tries to do everything she is able to in such a short time.
Her best scene would probably be the one in which De Niro's and Lawrence's characters persuade Weaver's character to lie to Pat (Cooper's character). In this scene she really shows how much her character cares about his son and she's afraid to disappoint him. There is a great amount of emotions shown in this single scene.
The chances of winning an Oscar: Don't make me laugh...