If your dd gets this bug (and it is an if, it isn't inevitable) you will find that vomiting 1 and a 1/2 year olds will take it more in their stride than you can possibly imagine. You will need a lot of old, large towels, a couple of buckets, some rubber gloves, extra supplies of nappies, anti-bacterial soap, anti-bacterial cleaning wipes, a good supply of dvds and plenty of biological washing powder.
If your dd is sick in the night, do not even think of changing her cot and putting her back in there (because she will do it again). So, in my experience, it is best to get up with sick child, cover the sofa with old towels, stick a dvd on, have a bucket nearby, and try and get the vomit in the bucket when it happens again!
You need one bucket for catching sick, and one bucket for soaking vomited-on items in plain cold water (which gets chucked away down the toilet) before washing in a hot wash with biological washing powder.
You need the anti bacterial soap for you and the rest of the family to wash their hands in once per hour and the wipes to wipe everything you might have touched/she might have touched whilst infectious.
You need the ice lollies for her to suck on when she is beginning to get over the vomiting and you want to make sure she is getting hydrated.
But, honestly, it is not as bad as you imagine with a simple vomiting bug. Very high temperatures, listlessness, no wet nappies, inability to wake up - are FAR more worrying.