Yes, CBT historically has been done with adults and adolescents, because of the level of cognition needed for it to be effective, but a bright child certainly can be successful with it. Typically, anxiety, stress reduction, depression are some of the concerns for which it has been effective.
You might try setting a daily reminder for doing her homework, and possibly one for putting it into her backpack. It also helps to have an afterschool homework routine and homework office, so that the environment becomes part of her scaffolding and cues.
There are also some good strategies in HOPS, which is a systematic homework intervention.
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