Ye are a great bunch of people so why wouldn't she love ye. But there are types and degrees of love between.different people. Accept it as a compliment or just as a positive and move on. Don't dissect it to determine it's inner meaning,because you will never find it.
I am glad you were able to have a normal party for your kid. Firstly it is rising above the situation and secondly it beats uneasy interactions.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together