(1) is wrong, as you say. (2) is a slightly awkward combination of tenses. These are better: "She didn't spend so much money yesterday as I have (done) today / as I'm spending today / as I intend to (spend) today".
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lucas21cI see. Then, how about "She made more money ten years ago than you do now" and "I spoke English better than he does now"? In case of these, I think both of them are okay.Right.