Daycare knowingly gave my daughter a sippy cup with mold in it!

Ok so my day daughter is 2 yrs old and drinks out of a sippy cup. I bring a clean sippy cup every day to the daycare with my daughter. About 3 weeks ago I brought a clean bottle with her. When I picked her up later that day I noticed that they didn't put her bottle in my daughters cubby. I didn't think much of it as I was in a rush and thought I would just ask for it back tomorrow and ill bring a new one the next day. Well turns out I completely forgot about that bottle and now its been there for 3 weeks. Mind you she has been bringing clean bottles with her everyday still. This past Friday I went to pick my daughter up from daycare and I noticed she was drinking water out of the forgotten bottle. I was surprised because I had completely forgotten about it but I was happy at the same that I got my bottle back. When we got home I took the bottle to wash it and I was shocked to see that all underneath the lid was full of mold. I feel so guilty for letting my daughter drink water from it on the way home and I feel horrible about losing track of my sippy cups. When I first enrolled my daughter in daycare I asked how often they'd be washing bottles through out the day and the teacher told me that they don't wash bottle with soap and that they only rinse them with water and that when the bottle starts to get stinky they'd tell me to bring it home. I thought that was really unhygienic so I decided that I'd bring a new bottle with my daughter everyday to make sure that she'd be drinking out of something clean. I just can't believe that they let her use that sippy cup for the past 3 week with the mold inside it and failed to tell me that I needed to take that bottle home to wash it. I want to talk to one of the daycare coordinators but I don't know how to approach this issue because I don't want anyone to get in trouble and I don't want any bad blood between the teacher and I because it'll my daughter who will suffer in the end. Please give me some advice... I know that I should have been more on top of the bottle situation and believe me I learnt my lesson about that. I just would like to know if anyone has been in a similar situation and how they approached the issue. via /r/Parenting http://ift.tt/2uyqsZo