Hey Clover,
I would get her checked out. Because often with a fever it shows something is potentially going on, and as she had chest stuff that seems to have cleared up, you want to make sure it is all clear. Secondary chest infections can come weeks after other symptoms have all but gone.

You are her mama, you know her best, if you feel like you have checked everything you know to check at home, and she seems worse, or you would like someone else to cast their eyes over her then go and see someone. Remember you can call the 24hr nurse they help do a home assesment and they often guide you on whether you need a doctor.