If there name is a common name like Juan they change it to John but if not there parents or they will pick another random name
I'm not sure of the vocab you're supposed to use, but I think it's: Manuel Carmen, estoy (I am) muy contento por ellos, pero eso (that) es algo enfermo y no puedo ir.
Hope that helps and is somewhat correct!
Answer: Usó
because you are talking about what she used yesterday