Misunderstood when you said force it...I don't want you to make her eat it either...I just wanted her to try it and then she can make her own choice after that.
Not a dumb question. Fruits and veggies for veileds are not a must. Some like it and others don't. Some eat the leaves of the plants in their cages too so I recommend that all plants are be real and non toxic and well washed both sides of the leaves for veileds in particular. Some, particularly female veileds eat the substrates too and try to eat stones and bark and can end up impacted...just to let you know.
Regardless of what you feed the roaches, crickets and superworms, I still recommend feeding them with an assortment of greens (dandelions, endive, escarole, kale, etc,) and veggies (carrots, squash, zucchini, sweet red pepper, sweet potato, etc) and a bit of fruit (berries, pears, apples, melon, etc) all of these can be offered to your female too.