So we (my husband and I) had been planning on going out tonight. We haven't gone out it in a while.…

So we (my husband and I) had been planning on going out tonight. We haven't gone out it in a while. So the plan was to have his parents watch our daughter for about 3-4 hours while we go to dinner, or a movie or whatever came to mind. But when we went over on Tuesday his mom mentioned his little sister being sick, but she was at work, so when she got off, we came home. Yesterday we texted her asking if she's still sick and she said a little, she's getting better, like she's getting unsick. So I told my husband let's just cancel and reschedule. But now my in laws are upset because we don't want to take her over anymore today. I mean, I know they were looking forward to having their granddaughter for a few hours but I also don't want her around her sick aunt. She says she's at the last stages of getting better but I still don't fee comfortable having her there until she's completely unsick, I mean, am I wrong?