Just looking for reassurance really. Just had DC3 - she's four weeks old. We also have a four year old and a two year old. I'm really overwhelmed and exhausted (as expected) and short on patience with the two older children. I always do solo bedtimes because DH works in the evenings. Lately the two year old has been messing about - asking for more and more things/ crying/ asking for endless cuddles. I'm trying really hard to be compassionate to how she might be feeling, especially as she can't articulate it like the four year old, but I'm struggling.
Last few nights she's been crying for me when I leave the room. I'm firm and say I have to go down stairs now but usually end up going back to her to give her a few reassuring cuddles. But I've also ended up losing my temper with her after a while because it's like there's literally not enough love/cuddles I can give. Plus I think she's playing me a bit.
So to my question - what's worse: once I've done bedtime and given her lots of love, not going back if she cries/ leaving her to cry and call for me until she falls asleep, or go to her knowing there's the likelihood I'll lose my temper eventually and make us all feel like crap 
I don't want to shout and she's only two, and I'm working really hard on recognising the triggers and doing what I can to avoid them. But I have a new baby, I'm exhausted and sleep deprived and a lot of the childcare is on me. We didn't do CC or anything like leaving them to cry - my natural instinct is to just reassure/ reassure/ reassure so it's hard for me to not go to her. But on balance it's better to not shout, and make her cry because I'm stressed, right?