Hey there. It sounds crazy that the school wants her to get welding equipment. Perhaps you could take a look at her project, and she could do something else, or use school equipment. I agree you shouldn't have to spend that much for a school project. Is there any way you can get your teeth fixed?

You shouldnt blame yourself for causing the children harm from your depression by showing them what's going on. Regardless you're going to affect them. Try to respect them / act nice but it's so HARD to hide things. Maybe you could do a better job by coming clean and being able to RELAX a bit. It's up to you but I just had that idea and thought I might share =)