Sound like an amatuer operation to me. One of my "early jobs" was to work as a stylist for a NY Advertising photographer.
At WORST, we would give credit AND Portofolio photos for props - sometimes including rights to use the shots for their own purposes. For example, sharing a copy of the photo on line with credit to the photographer and pointing out your work as a prop. (The internet was not an issue then as it is now)
At BEST from your perspective - we would pay a "rental fee" and were responsible for returning the item in the same condition.
In many cases - it was not uncommon for a deposit to be required. Tony was well known so that was not usually the case - but he had a 30 year rep with Madison Ave agencies.
I would speculate that your items will be used in props for portrait work and siince it is likely to involve infants and children, I would offer to sell her the props with a discount for limited rights. Specify that you retain rights to use YOUR OWN Photos to use those images for advertising purposes including but not limited to your portfolio.
It will be up to you if you want to accept partial payment in the form of digital and print images. If you decide to do this, besure that you have all the releases from any humans who appear in the photo.
You might also want to call a few other photographers in the area to see what they would charge to photo your work so you have an idea of the value.
There is a book that has pretty good sample releases, if you decide to pursue this, feel free to email me privately for details.
Please be aware that Photographers are among the best educated on the extent of their intellectual property rights and you need to be aware of yours and not give them up in an uneven exchange.
This could be an opportunity, but there is value on both sides be sure you do not sell yourself short. Better to walk away than be inadvertently or purposefully have your work devalued or worse loose control of your creative efforts.
Enjoy The Making