Austria declares war to Bavaria, French ally doesn't react ?

[veji1]

Hi, It's the first turn of Mayl 1805 in my game as France and after a bit of cajolling (stat visit..) I formally integrated Bavaria in the french alliance 3 turns ago. 2 turns ago Austria declared war to Bavaria and none of Bavaria's allies react ! It would be the perfect time for me to pounce, but I am still just at -48 with Austria and so cannot go at them... Am at work so don't have the files, but there my be an issue there right ?