Soups are a great way to introduce her to a whole range of veggies and you can combine them and make them in every consistence you like.
Deglutition with sucking and mastication is not the same process and involves different muscles so to improve mastication+deglutition you should avoid pouches.
Try poaching the banana. Put 3 fingers of water to boil, slice the banana into it, remove banana add a bit of liquid and blend. For apple and pear, put 1 finger of water, cube apple and/or pear, let it simmer for 10-15 min covered (check it is not burning) blend with all the liquid.
Make a pea+potatoes soup which basically is pea and potatoes in a small pot, add enough water or broth just to cover them, blend it into a thick cream, add a pieve of butter or extra virgin olive oil.
In a small pan, slice onion, make it melt, add cubed carrots, a couple of slices cubed apple, let it simmer, add a but of water for 5 more minutes, and when nice and soft, blend.
It takes time, but she will get there. Just prepare nice food. A oven roasted pumpkin with rosemary and oil until the natural sugars have caramelised, and crushed it wth a fork or 2 seconds on the blender.
Sliced oven roasted zucchini are nice and you can hand her one and see if she will tear a piece