Are your daughter's health issues temporary? If so, what will she do when she's better? Is she depressed? Might you be enabling her by doing everything even if she could/should do it? (Rhetorical questions just for you to think about.)
Anyway, if the little girl finds that she gets lots of attention concerning 'pottying' (negative OR positive), she may use it just to have time with an adult. Just take her when you go to the bathroom (and go often! Ha!) & have her to sit there like you do. When she hears you peeing, say 'can you make it rattle (or 'make it tinkle') too?' , and don't make any deal about it unless she does use it (to which you sing her praises, "Good girl!" and clap your hands). If she doesn't 'go', just pull your pants up, put her diaper back on and go your merry way with no comment. She'll get it.
As for the pacifier, only give it to her when she asks nicely for it. Otherwise keep it put up somewhere. Usually a baby goes through a stage (usually about one year old) that they are so interested in everything else it's easy to take bottles and pacifiers away. If it's NOT taken away during that time, it seems that they get RE-attached to it and it's harder to 'break' them of it. I'm also 50, and our youngest is just 'flying the coop' (and leaving us with an empty nest) this weekend. (*sigh*) Anyway, I read everything I could get my hands on about childrearing when they were all (4) little. She was our only thumb-sucker. If the others had done it, I'd have been mortified, but with the 4th one, you're a little more 'laid back' (LOL) I'd read, though, that if a child has a 'security item' (blanket, stuffed animal, bottle, pacifier, thumb, etc) which makes them feel 'warm and fuzzy', and you're trying to take away that one item, it simply makes them feel INSECURE and MORE dependent on it. Again, don't make a fuss about it. Maybe set rules that she can have it after meals and/or when she's going to sleep and stick to your rules!! My mom (who's been in heaven for nearly 10 years) gave me the best parenting advice I've ever heard in one sentence: "Don't say anything to a child unless you MEAN it." Hope this serves you well, also.
God bless, and may your daughter regain good health (mental and physical)!
P.S. I read some of your other responses. I'd never heard of the 'Paci-Fairy' or that other babies need the pacifiers, but that's cute! LOL Guess I'm just old fashioned and overly practical!
Oh, and if you decide to use training panties, don't put plastic pants over them or else they can't feel the 'cool/wet' sensation. I was way into adulthood and parenting when I finally read that the coolness is from evaporation (which DOESN'T happen with plastic over-pants. Like, DUH! LOL I'd just never thought about it.)