seems like you are doing a good job, FP,,, ~ i did not know sam was originally a stray, and i reckon she is accustomed to the outdoors { and u already know the risks o' that, so 'nuf said,,, }.
same w/the strays that regularly camp on my parents' decks for food. when 1 disappears for weeks @ a time, they reckon a coyote or bear got them,, sometimes they come back, sometimes they do not. they still worry 'bout them, tho.
only 1 stray will stay inside overnite during the winter months, ~ 'n' it took yrs to gain the cat's trust.
here are 7 o' the 12 cats my folks reguarly feed, ~
and here is 1 o' them standing on the bench lookin' in { they know that once my mom operns the curtains in the morning, it is feeding time : ), ~
anyway,, ~ i hope sam heals quickly 'n' w/o probs
