Am I obsessed with my daughter?

I don't think you sound obsessed. The moms in my play group are always talking about leaving their kids with the hubby and going out together. I can't help but think "I like having them with me all the time!" I would much rather spend time with them than other people. I work full time as well from 10 pm to 6 am, but I can't wait to wake up every day so I can see her smiling face. So, yeah, I'm with you. I'll take obsessed any day over lazy and/or selfish.