Guess it's time to start lifting the bowl! Seriously, I've met a number of Beagles who developed wt. issues, but usually later in life. They do have a tendency to put on weight if you don't watch their diet. Has her exercise routine changed? Does she seem to be eating more? Maybe you could try scheduled feedings? It may take some time and patience, but most adjust to the change in routine. Of course, Anna would need to be on schedule too.