We have a fairly standard issue 1 year old at home, the typical teething, sleep issues, sporadic moodiness that I believe is likely the norm. My wife is a super star and watches/takes care of him probably a good 80% of the time where we are both home. Now note; I fully offer to step up whenever and however I can, however she seems to stoically default to some unspoken assumption that the baby is her responsibility alone and wants to save me the headache of dealing with him a majority of the time. It's admirable, but it causes issues when I'm trying to help her out so that she can get sleep or take a break. It practically gets to a near argument to get her to let me deal w/ an issue or take over most of the time. She's always of the vastly incorrect impression that I need the break, not her.
Example; lil tot is going through more teething and has been waking up nightly around 1am and has been taking anywhere from 1-3 hours to get back to bed. Last night was a typical example of where I gave him his bottle, brought him down, and tried to get him to bed, but struggled w/ him for a good 2+ hours. After a while the wife comes downstairs (she hasn't been sleeping, was minding the monitor and stayed up in case I needed help) and nudged me to take over so I could go to sleep. This would be fine if she didn't take the brunt of most of his nightly episodes, so even though I want to help shoulder that burden, she won't take advantage of it.
I guess long story short, I don't know how to convince her to let me shoulder some of the burden and let me "take some of the hits". She says things like "you need to sleep too" while entirely unaware of the irony/hypocrisy of this. How should I approach this? or How have others who've had similar experiences approached this?