On to you guinea problem if she is still around. I have over 30 guineas, the reason I am not sure of the count because they roam a lot. Our guineas roost in a big oak in all kinds of weather and although the weather from time to time has been below freezing they seem to prefer the tree rather than an empty old hen house undeneath the tree. The only kind of weather I notice they really do not like is pouring rain. Then they will get into the hen house until evening but they always go back to the tree.
Guineas are very hardy.
I really doubt you can get her into your garage, they aren't exactly people birds. I hope this can be of some help. This is a private posting area. A valid username and password combination is required to post messages to this discussion.