In reply to Rams:
My experience with Raynaud's is that it's not about magic boots or magic gloves, but about managing your core temperature with clothing and good hydration and nutrition. Obviously, people are different, but Raynaud's usually kicks in if I let my core get cold (standing around for too long, not wearing enough insulation), or hungry and thirsty.
For my hands, I've found that keeping my wrists warm helps a little.
For boots, I'd suggest thick socks and boots that will accommodate them; too tight boots will compromise good circulation. And, again, keeping the legs warm will help, even if this means wearing a base layer under walking trousers in 'summer'.
It might also be worth investigating different boot lacing techniques; using a surgeon's knot to lock the laces below the ankle cuff, for instance, means that the boot can be tightened where needed, and not over-tightened elsewhere, or have the lace tension slip from where you want it. This can also help with blisters, too.
Then there's the classic mountaineer's maxim: "got cold feet? Wear a hat"; core temperature management again.
It's very hard to recommend specific products because boot fit is so personal.
It's been a pretty bad winter for Raynaud's; I've had chilblains from sitting using the computer or watching the TV for too long, and getting very cold feet. So it may not be that her condition is getting worse. May be worth checking with your GP, anyway.