If a Lutheran Step Mother dies and has Jehovah Witnesses as stepchildren will they attend the funeral?

It's up to the Jehovah's Witness, they may feel more comfortable just attending refreshments afterwards, or they may feel okay with going to the service. Also depends on how close they were to that family member. There would be little point in a JW going to the church funeral of someone they had little to do with, however if they were a close relative I can't see why they wouldn't attend. Up to their own conscience.