Need a quick bit of advice

My W said to me today what are you doing the weekend of the 14th November. Currently I have little to no plans she said then would I mind if she booked in for a training course both days not sleep over in London


No this just means me looking after my children which I do not mind doing but I just feel I am being used for her benefit

Any advice if I say no then I am controlling and she feels this already anyway


Me:48 W 41
M:18 T:26
2 D 18 & 4
2 S 17 & 13
Bomb: 20/7/2015 in house separation
D filed 06/17
Separate houses 10/17
D Final 29/12//17.