i had the same prob too and becoz of this, i was under alot of stress over the 4 mths b4 i went back to work - wepted and scolded behind MIL's back. but i muz really thanks her tat i slimmed down!
my mil gave all sorts of excuses not to help look after my bb even when the last resort was to, she juz needed to help me "temp" till i found a nanny. we have been toking to her on and off to bbsit since i was pregnant till i gave birth. and everytime her reply were so negative and so full of excuses. after all sorts of excuses she came up wif never worked out coz we always have ways to convince her, she finally told us to look for nanny, but the last draw that made me very mad was when she asked me to quit my job wen we said nanny is like a stranger!!!!!
basically, whenever my hub toks to her about bbsitting, she would use her health and leg pain as excuses. right b4 marriage, my then-bf oredi told me his mother wld not want to look after kids. honestly speaking, her health issue is not critical till it would affect her if she help look after our bb. if only she would be honest and tell us she doesnt like to look after her grandchild and only wants her freedom to shop till drop, we would not force her. but instead she finds excuses. trying not to be a bad person but in fact, it oredi makes herself looks bad.
we noe she doesnt want to lose her freedom. she would go to the extent of doing it thro action to show us that she cannot help us, such as during times when we ask her to help bbsit while me and hub go out, things such as these happened - whole house not locked properly, gas cooker used but not turned off, water flask not cupped properly after use, hit her own leg showing us they were in pain, even told me she got tenses up easily, scared she would faint looking after bb. such has never happened or being told to me b4! she wanted to make herself looked like it was dangerous to have her looked after bb.
of coz its her choice and its not rite that we "force" her into something she's unwilling to do....but well...when yr family is in trouble and u choose not to help, how wld u feel? its like leaving us in the lurch...so now, our relationship is "strained". she knows i am not happy coz i only go to her house once a mth. i call her when i see her but dun initial toks anymore. the funny part, is after we found own nanny, her leg no longer painful. could carry bb to run after the older kids, haha.
i managed to find a nanny 2 weeks b4 i went back to work. not very ideal coz needed to walk 10 min to her house till my knee cap started to feel the pain oredi. but at least i noe bb is in good hands and i dun have to lose my job. we cut her allowance and use it to pay the nanny fee.
sorry for the long story coz till today, i still felt very sore over this which actually happened many mths ago. never really had a chance to pour everything out to pp in similar situation. i hope u all will be able to resolve the bbsitting issues.