She's very fluffy which makes them look broader and photos, especially front-on, aren't the best way to judge weight. Kilo weight isn't always the best gauge of a dog being overweight either, Caoimhe is 14" tall, 2.5 inches shorter than Ro, but weighs a kilo more than him; she's about 14kg which is heavy for her height but she's solid muscle with next to no body fat, they're both a bit ribby just now having been out working all season. If you can see a clearly defined waist when you look down at them from above and feel the ribs with only light pressure then they're ok. If there's not much of a waist and you have to dig in to feel ribs then they're overweight.