I really don't think Rose will be upset,but I will go and se

I really don't think Rose will be upset,but I will go and see her in case she______.
A.is
补充完整就是I really don't think Rose will be upset,but I will go and see her in case she is upset.
其他相似例句：－－Will you do out tonight?
--- No.Jill told me she might come here this morning.I will stay at home in case she comes.