So I take it she did not say she would no longer accept money or other help from you since you are an apostate? Sounds like she thinks you are but needs a direct confirmation from you. But I see that you don't feel you are an apostate. Does the WTS say that inactive jws are apostate?
*** w85 12/15 p. 7 How You Can Show Gratitude for What Jesus Did ***
Many such Christians are aware that assembling together is a part of God’s worship. But have you ever considered regular attendance at Christian meetings to be a sign of gratefulness? The apostle Paul did. He reasons that way in the 10th chapter of his letter to the Hebrews. He also reveals the danger of indifference to Christian meetings. Such an attitude could cause a Christian to become discouraged and inactive in good deeds of faith. For some others, their appreciation for God’s way of salvation through Christ could be shrinking. If this is true and their dwindling faith is not checked, it may lead to willful sin, even apostasy. This would amount to treating God’s gift as something of “ordinary value,” or as something common, an insult to both Jehovah and Jesus.—Hebrews 10:23-31.
*** w08 11/15 p. 14 Help Them Return Without Delay! ***Was It a Problem With a Teaching?
10 Some may have left God’s flock because they did not agree with some Scriptural teaching. The Israelites freed from Egyptian bondage “forgot [God’s] works” on their behalf and “did not wait for his counsel.” (Ps. 106:13) It may be helpful to remind an inactive one that “the faithful and discreet slave” is dispensing excellent spiritual food. (Matt. 24:45) That is how the person originally learned the truth. So why should he not be determined to walk in the truth again?—2 John 4.
*** w82 1/15 p. 31 Questions From Readers ***
The Watchtower of September 15, 1981, page 23, showed that there is a difference between (a) a Christian who becomes spiritually weak and inactive, and (b) a person who clearly renounces his being one of Jehovah’s Witnesses, leading the congregation elders to announce that he has “disassociated” himself. It seems that your son fits the first description.
The Watchtower mentioned that some Christians become weak in faith and spirituality. This occurred also in the first century. (Romans 14:1, 2; 1 Corinthians 11:30) It does not mean that they have ceased to be Christians. Even if they become so weak that they no longer share the “good news” with others and stop attending meetings, and they are not bringing reproach on the Christian congregation, they are still to be regarded as our spiritual brothers and sisters.
*** w93 7/15 p. 27 Tenderly Shepherding Jehovah’s Precious Sheep ***
Jesus gave an illustration about a man who had a hundred sheep but promptly searched for one that had strayed in order to bring it back to the flock. (Matthew 18:12-14; Luke 15:3-7) In like manner an overseer should have concern for each member of the congregation. Inactivity in the ministry or in attending Christian meetings does not mean that the sheep is no longer part of the flock. He remains part of “all the flock” for whom the elders must “render an account” to Jehovah.