You might be surprised!! Babies tend to get sick and then better much quicker than us adults, and if you are breastfeeding her, all that milk will contain the antibodies you are making to fight the cold off, so she is even better off!
Dont be stressed about it. Keep an eye on her fluids and her poos and wees. Give her some panadol if she's distressed, but dont jump in and do it if she's just a little hot.
When we got gastro as a family shane and I were as sick as dogs. Jenna just spewed a couple of times, and had a couple of runny nappies - that was it! It was amazing that it affected her so little.
Make sure you keep giving cuddles to your little one as they may get upset if mummy is pulling away all the time.

she will be fine - and if you get worried, pop off to the dr!