A eye problem

This morning I had some family over to help bring in a new bed and take the old one away. Mousy desided to bolt the open door sometime during moving one box spring and bringing in the other. It happend in a matter of minutes. I looked for her for about and hour around my appartment to no avail and hoped she would just show back up. Even when We would go out side she would always stand basicly on the porch or maybe get a few feet away but always right in the area. This time she was no where around. About two hours later she showed up but there is a problem her right eye looks like it has blood in it. It seems like it bothers her a little bit she keeps squinting a bit but other than that she seems fine. She is eating and dosen;t seem to be in pain. She even played with her feather on a string thing for awhile before I noticed the eye. and got a closer look. I am fairly sure she can still see out of it and I will keep an update. I plan on taking her in the first thing in the morning unles she takes a turn for the worse sometime between now and then. I just hope its not going to be a operation but I think it looks more like when people get punched in the eye and it gets bloodshot. Not sure how it happend there were a few dogs around this morning and she did seem a bit mussed up like she had been rolling around in dirt or something but other than that I have no idea what could have happend.