Window locks broken.

We may be able to supply a replacement lock. Before I recommend anything, can you verify that the distance between the two installation hole centers is 2-1/4"? It's very difficult to garner precise size from just a photo of a tape measure.

If it is, then my top recommendation would be the 90-180. This has a 2-1/4" hole spacing and a 3/8" backset. As long as those two dimensions match it should work fine for this application.

Dimensions for 90-180