Should I tell owner how to train their dog?

So first sorry about the length but I feel like I have to explain a lot about my situation. I have done pet sitting for this woman and her two dogs for a few months now. Her oldest dog, an 11 year old cocker, has some serious behavioral and disobedience problems. He has an addiction to milkbones and gets one every time he finishes doing his business outside but when he gets one, he won't stop barking and crying for more. His favorite place to rest is right underneath the jar containing his milkbones. When I walk past or into the kitchen, he'll go straight for the milkbones. He will also cry like a child whenever I eat in front of him. He get very jealous of his Labrador brother to the point at which he will steal his brother's toy if he sees he's having too much fun with it. When I take care of the two, I always ignore him and turn my back away from him when he starts acting up to show him crying will not get the attention he wants. He is slowly getting there but I feel like he would improve a lot more if his mom would help enforce that training. I am not sure if it's appropriate of me to tell this woman how to train her dog because he's already a senior and I know she spends most of her weekday working outside the house. What should I do?