Ear infections are not contagious. But they still won't let her in daycare with a fever. And if she just wants mommy there's no point in sending her if she doesn't have a fever. Just tell your boss the baby's sick and can't go to daycare and leave it at that.
I hope she feels better! I was at work for 2-3 weeks after maternity leave when I had to stay home my sick little one. Then she was better for a couple weeks then I was out again for 8 days because she had RSV. She was in the hospital for 3 days and I had to keep her home for 5 days. My boss has 3 daughters one of whom is still in high school. She is always leaving early to take her to appts and for her extra curriculars.