Questions 1 and 2: My spouse is not Catholic, can there be a Funeral Mass? Is there a Purgatory?
Answers: Yes and Yes. Always persevere in praying for loved ones after death.
It is therefore a holy and wholesome thought to pray for the dead, that they may be loosed from sins.
2 Maccabees 12:38-46
But if someone’s work is burned up, that one will suffer loss; the person will be saved, but only as through fire.
1 Corinthians 3:10-15
Some other scriptural references: Matthew 12:31-32; 1 Peter 3:18-22; and 1 Peter 4:6.
See Catechism of the Catholic Church: CCC 1030-1032