At this point not to sound harsh but it would like rehoming the pup is your best option. You need to train dad before you can train the pup. If those hide rolls are actual rawhide toss them now!! Don’t ever buy them again.
If you want her to start eating her food; 1. Stop giving treats. 2. Make sure you are feeding a healthy appetizing food. 3. Add a spoonful of wet food or 1/4c of HOT water to make it smell better.
Crate and clicker training could go a long way, but training is a constant thing. My rule is 15mins a day with a fully trained dog. You never stop training, behavior should always be corrected or reinforced.With more stubborn dogs you can’t just yell or say no. You need to be proactive, remove all potential items that cause negative behavior I.e. food left on the counter. If counter surfing occurs physically move the pup so she knows you don’t allow that.
Leash training is a whole other battle. My biggest word of advice is YOU ARE PACK LEADER! This means if she pulls AT ALL you stop and turn around. Easier said than done with a dog that pulls I know. It’s exhausting and sometimes you won’t make it past your own driveway.
This will only work if you are in it for the long haul and everyone is on the same page. Otherwise for pup’s health and well-being you are better off finding a new home.