Therapy might help, but it's sometimes difficult to convince somebody to talk to a therapist. From one parent to another, what I would do in a similar situation is look for something outside the home that my daughter and I could do together once a week. I'd let her know that I really want to spend time doing fun or exciting things with her. I'd start with something fun like a trip to an amusement park or a dance class (if she likes dancing) (something that both of us have to put our phones away for). For ongoing weekly outings, maybe we could find a cause to work on together (like becoming adult literacy tutors or volunteering at a children's hospital) or maybe set up a bunco club with people of both our age groups, go to the show every Sunday, or take a culinary class together. I might see if my sister and niece want to join us on some of these outings to give her someone her own age to talk to.