I'm going a completely different direction here.
Ever thought of Child Led Weaning? Not a popular theory but a gentle way to respect both of your needs. Read a bit here :
http://www.borstvoeding.com/voedselintroductie/blw/engels...
I like this quote from that website:
Continuing to give milk feeds 'on demand' during the weaning period will have the added advantage of allowing the baby to decide how and when to cut down his milk intake. As he eats more at shared mealtimes, so he will 'forget' to ask for some of his milk feeds, or will take less at each feed. There is no need for his mother to make these decisions for him.
REgarding comfort nursing (I've got this going on with my 16 mo [lost bm early on but never stopped trying/she still comfort nurses):
http://www.kellymom.com/parenting/sleep/comfortnursing.html
"Comfort nursing serves a purpose, too. Studies seem to indicate that this type of sucking overall decreases a baby's heart rate and lets him relax. It seems to have a very positive effect on his whole physical and emotional well-being. Don't be afraid to allow this type of nursing. Breastfeeding is more than just imparting fluids and nourishment. It's a way to nurture your child as well.
"My toddler wants to comfort nurse forever when he's trying to fall asleep.
Sometimes we start to question ourselves (again, perhaps) when we have a nursing toddler who wants to hang out at the breast for hours at bedtime, without ever quite falling asleep. Have you ever had one of those nights when you keep trying to slip away, thinking your toddler is asleep, to be interrupted by a sleepy protest every time you try to unlatch? The later at night it is, the more you can start to doubt yourself and wonder if "they" might have been right about that "bad habit."
Both of my kids have gone through stages of time (often teething or illness related) when they wanted to stay latched forever, but remember that these are usually just stages that come and go. If you are willing to let your toddler continue to nurse to sleep, rest assured that he will learn to fall asleep on his own, in his own time.
What if the comfort nursing is becoming uncomfortable for you, or if you just feel that you'd like to move away from it? If you're experiencing discomfort, pull your child closer in and check on latch and positioning - remember that even constant comfort nursing should not be uncomfortable if latch and positioning are as they should be (assuming you're not pregnant). If you feel the need to gently ease away from nursing to sleep, then go ahead and do so (see above for tips) - nursing is a two-way street and there is no reason not to have some basic age-appropriate "nursing rules" for toddlers. But don't feel that you need to change things just because someone wants to "guilt" you into it -- it's only a problem if it's adversely affecting your family."
It sounds like your babe just needs to reconnect with you via comfort nursing and at least they're getting their sucking needs met with a bottle. It also sounds like the family is going through a stressful time; since you have found ways to comfort yourself, why not your babe?
I don't personally subscribe to the whole bad teeth from a bottle thing (another non-mainstream theory); as I understand it, teeth, their strength and health, are determined while in utero. You're born with strong teeth or you aren't. It's just too inconsistent which babes have baby bottle tooth decay and which ones don't. There are babies whose parents do everything 'right' after birth (breast feeding, teeth cleaning, no sugar, etc.) and have massive tooth decay and others who just don't. That said, I don't let my dd fall asleep with a bottle of milk to pool on her teeth at night... but I don't get up and brush them either.
Good luck Mama, you're doing great!