MRI pains

so our daughter is supposed to go in for quarterly mri's to ensure her hydrocephalous and khiari malformation are not getting worse and it seems as though we have the hardest time keeping her healthy. because of her age she has to be sedated for her mri's which means if she is showing any symptoms of being sick the day of the mri or up to 2 weeks prior she is then rejected from her scheduled mri. she was supposed to have an mri in the beginning of february but got pretty sick with really bad wheezing and coughing episodes...so we rescheduled it for today and kept her home as much as we possibly could and tried to stay germ free but low and behold the day of her mri (today) she came down with a mild grade fever accompanied by a small cough and some minor lung congestion....the beginning of something great- i am sure. so we were unable to have her go into her mri and we are quite down about it. we try so hard and we feel that it just gets slapped back in our faces. I am really hoping that she can get better in about a week and then we can keep her healthy for another 2-3 weeks. I am putting it in the Lord's hands and I am letting him control it because it is obviously something we can't control along with many other things in life that are happening right now.