She sounds like a typical teen to me. But I never want to make that judgment without covering all bases. Please take her for a complete physical checkup. Ask that her thyroid and other hormone levels be tested. Sometimes weight gain, fatigue and problems with concentration are related to hormonal imbalances. It’s important to check.
If everything checks out medically, then maybe family therapy (you, your husband, and your daughter) instead of individual therapy for her will be helpful. Tell her how important it is for the two of you to work on your relationship. Assure her that you aren’t convinced something is “wrong” with her but that maybe you and her dad need to learn ways to be more supportive. If she won’t go, go yourself. A few sessions with a therapist who has expertise with adolescent issues and who can hear the whole story will be far more helpful than I can be.
I wish you well.