Now you know why I said earlier that I do not sell puppies to inexperienced people during school holidays or if they take holidays. Because people smother the puppy with love and attention and then it's a shock when everyone has to go about their daily work or school commitments.
You now have to do what has been stated above, if necessary advise your neighbours. Maybe they go to sport on Saturday mornings and you can save that time for the longer periods of time outside. And just like everything else you are going to have to set aside time to do the training for this.
Give her a bone outside when you are home. She needs to be outside more even when you are home.
None of my dogs stay in the house when I am not home. I know I have more than one but it still wouldn't happen. When they see me grab my bag and keys they head for the back door and wait for their smacko, I'm sure they are thinking, come on mum, give us the treat and rack-off.
If I go thru the rear garage door then they know they are coming with me.