It's just difficult to parse a writing where the same pronoun is used throughout for multiple different entities. This exact same issue commonly crops up with "he", "she", and "it" as well.

The solution in these instances is to limit usage of the pronoun altogether and just use the noun directly wherever there may be any ambiguity.

For example, don't say, "Julia wrecked Sarah's car; she was pissed!" The "she" here should just be replaced with "Sarah" or "Julia", even if it sounds a little odd to use the same noun twice in short succession.