The most important thing is to do a little math every day. We used the kumon books and the singapore math books. Keep the sessions short and pleasant so she doesn't fight them the next day. Give her lots of attention during the session so math becomes the thing you guys do together (assuming she likes that).

What textbooks were you using at home to help her with Math from pre-K till now? None? LOL. And your kid will survive in a post-AI world?