I am putting together a small wicker basket with eco shredded paper in it, and adding things like a small candle in a glass holder, relaxing pillow spray, a luxury handcream, a well known brand of herbal teabags, I haven't finished yet, but hopefully something like that would have at least a few things in it that the lady would appreciate.
My other thoughts for my basket are maybe a small luxury box of chocolates, a miniture wine or prosecco, luxury lip balm - things really that most of us would get in a supermarket shop, but a bit more luxurious, the sort of things we wouldn't normally spend on ourselves, so a bit of a pamper or treat.
I think that the good thing about this is that you can make it as large or small as you like to suit your budget. Then you could always add something like a small ornament, maybe of the breed of dog she has - if she has a dog. I hope that I have helped give you some ideas anyway.
I have just had another idea for the receptacle. How about an unusual and artistic tote bag, where you actually individually wrap up the same sort of "treat" presents as before, and give her a little card accompanying it, saying it is a lucky dip for her to use over a few days - rather than opening them all at once.
My one other thought is, would it be suitable for you to give her an IOU in a little card, for an Afternoon Tea for you and her at a special place near you both, with you just asking her for a convenient date. If you don't think that you know each other well enough, and you do know that she has other company that she would like to spend time with - an adult child, or her mother etc then you could just get her a voucher for two from there, and put it in a nice card - but only if you know she has someone else that she would like to take.
I hope someone comes up with a good idea for you soon @Frequency .I think it is lovely of you to do this for her 💐🍫