Yep, leave the food down for about 10 minutes and then pick it back up. She will learn that there are specific feeding times and if she's hungry she'll eat. If you're worried about her getting enough, you can try adding a 3rd meal/snack in there. Feed her as soon as you get home, then put the food down again a few hours later before everyone settles down for bedtime. You might have to use trial and error on this one though, it might make it harder for the puppy to "hold it" through the night with a later feeding. But 2x a day is probably fine at this point anyways.
I would never recommend a primarily wet food diet. It's not good for their teeth and it's much more expensive to feed. Also I find it causes gas and bad breath. A little in addition to the dry food is fine, but I only like to use it for mixing in yucky meds or supplements when needed, or as an occasional special treat.
Just be careful you don't create a picky eater. A little variety in the dry kibble or other add ons isn't bad, but if they learn to expect a buffet it can become a pain in the rear later. lol They can really learn to hold out for the good stuff.
Another fun way to get more food into her is to spend lots of time doing little training exercises. Even simple things like name recognition, attention, sits, loose leash walking, etc. Lots of things you can do in the house in tight quarters. Use some of her food as treats/rewards or some other healthy treat. Then she'll at least be eating a few more bites throughout the day. And you'll be getting ahead of the game in the behavior department!