Thanks for the reply!
No, her eye does not seem to bother her. She is acting completely normal and is not showing any signs of pain.
I have done a little more research online and it appears that some breeds of rat have tears that naturally have a red/maroon color to them, so that may be the case.
Another website states that a possible cause is an infection in the area of the eye.
I'll wait until monday and if any more issues arise or if the discharge continues then it will be time for a checkup! I'll have to make an appointment and hope for the best, the vet nearest to me does not seem to have a lot of experience with rodents and made that clear to me with a previous rat that I had taken in, but my hope is that he will at least be able to determine if further action should be taken.