Hi , hope you doing ok . I'm not in exactly the same situation as you , but am a mum!!!
I ended up in a+ e and then had emergency surgery as my bowel had perforated , had colostomy ( mine needed doing twice , but only as they hadn't cleared the infection the first time ) and I ended up being in hospital for about 3 weeks . I ahve 2 children 4 + 6 - and both at school - was a worry for me thinking about them at home / huband having to take time off etc , but all worked out ok . Both families local and good friend took them to school etc. My husband didn;t feel it was a burden at all to be looking after them , was just grateful I was ok and is a very "hands on dad " anyway( am aware this is not always the case
I recovered much quicker than thougt I would , am about 6 weeks into recovery after 2nd op , and wounds healed brillaintly etc , still tired , but feel moe or less normal ( or as normal as I get ) Obviously slightly different for me as my 2 are older nd I have colostomy not j pouch , but would imagine that if you can plan surgery you can sort out childcare etc - and your little one won't be old enough to remember all the disruption , and as B'dereh says , hopefully will help you in long run with her if you not poorly .
Know this may not be much help at all , as not same as you , but the surgery was definitley took less time to recover from than I thought it would !!!!Take care xxxx