I guess let's try that

drivers/groupme_driver.py

@@ -64,7 +64,7 @@ class GroupMeBot(rollbot.Rollbot[GroupMeMessage]):
                         params={
                             "token": groupme_token,
                             "limit": 1,
-                            "after_id": str(int(att_body["base_reply_id"]) - 1),
+                            "after_id": str(int(att_body["reply_id"]) - 1),
                         },
                     ) as resp:
                         msg = (await resp.json())["response"]["messages"][0]