It looks cute with that skull figure and wool at the back. The message is very clear- she is dangerous because she loves to yarn.
In fact, it is one of the best hobbies for girls- creating beautiful patterns out of it is indeed a marvelous job.
If your wife or mother loves knitting then definitely this mug will be loved by her.
Every time she drinks coffee, she will remember her passion and your love towards her.
You can have this mug in any other type too like the travel mug, beer stein, frosted glass mug etc.