Hi Gigi
Im the same as Berry... When Mother's Day falls on his weekend she goes to him that Friday but comes home on the Saturday and the same with Father's Day if she is at our place she goes to him on the Saturday at 1pm and comes home at 1pm on the Sunday so she can also spend some time with her step dad (my hubby) as he has been in her life since she was around 13 or 14 months old..
It is really hard trying to work out those special days such as birthdays, christmas, your birthday etc but it is important or otherwise you may miss out on those special days.
Goodluck with everything