I would say wear a mask and have your daughter wear a mask when she is in the house or car with you. When my husband gets sick we both wear masks but I stay upstairs and he stays downstairs. He wears the mask 95% of time. We really try to stay seperate during that time. He sleeps downstairs, I eat upstairs, he uses a different shower and bath. Try to seperate yourself as much as possible and both wear masks. It is tough!
Jennifer 36 years old with CF
Ps: When my mom was raising me when she got sick she wore a mask, I did not and she washed hands constantly and she said I never got sick from her..go figure, GOOD LUCK