Hi NathanJM,
It’s very possible because of your wife’s lower weight that in a standard 3 layer component latex mattress she may do better with ultra soft Talalay that is in a lower ILD range than the standard “soft” layer that is offered by Savvy Rest or other component latex mattresses.
It may be worth testing some of the Pure Latex Bliss mattresses that have softer latex comfort layers just to see if your experience is any better or “points to” softer comfort layers (you can see the PLB specs in post #2 here) but you may need to call or email them to see if there are any retailers that carry them in your area because their retail store finder doesn’t show any that are within 100 miles of you. Of course it’s also possible to add a softer topper to any mattress as well if you need it. Some of the better online sources for latex toppers I’m aware of are listed in post # here and latex toppers can be ordered in a firmness level as low as 14 ILD.
ADMIN NOTE: Removed 404 page link | Archived Footprint: latexbliss.com/retailers2
Even though it’s not necessary with latex in most cases … a zoning system can be helpful with more challenging situations or body types and her experience certainly “points to” a greater likelihood that she may be one of those that does better with zoning. There is more about zoning in post #11 here and the other posts it links to.
Several of the online manufacturers that are members of this site have some form of zoning in their component mattresses that may also be well worth talking to.
Spindle uses 100% natural continuous pour Dunlop that has 7 zones with firmer center zoning.
CozyPure also uses a 5 zoned support core in their Organic Comfort Zone line of mattresses.
Flobeds also has a customizable zoning system in their vZone line of mattresses where both the individual layers and the individual zones can be customized to suit the needs and preferences of each person.
Reverie also has latex cylinders in their support system that can be rearranged or “zoned” in different ways as well.
All of these mattresses also have side to side split configurations available as well so that each side of the mattress can be customized differently to match different needs and preferences for each half of a couple. There is more about side to side split mattresses in post #2 here.
Phoenix